A bunny ears Fig 8 knot will give you a double powerpoint loop. But if your static rope is 10 mm, I wouldn't worry about a single strand PP loop.

Learned this from an instructor this summer, but I'm just now getting an opportunity to put it into use, so I want to make sure I remember it right, and that it's safe.

I left some of the knots with some slack in them for illustration purposes, FYI.

I have 100 feet of 11mm static line. I start with a safety line dropped over the edge by about 8'. (Safety line has a knot in the end, and is used to put thru a grigri for safety while mucking about near the edge, or in case I need to rap over the edge a bit to fix the power point) From there it's a bowline on a bight around a tree for anchor 1, with the tail tied with a double fisherman's knot. Safety line is the one on the left in this picture.

[URL=http://img18.imagevenue.com/img.php?image=45166_PhotoOct0644206PM_122_459lo.jpg][IMG]http://img18.imagevenue.com/loc459/th_45166_PhotoOct0644206PM_122_459lo.jpg[/IMG]

Other line from that night goes over the edge in a bight for the power point, with the other end coming up to anchor 2, tied around a tree in a similar fashion to anchor 1.

[URL=http://img131.imagevenue.com/img.php?image=45314_PhotoOct0644428PM_122_379lo.jpg][IMG]http://img131.imagevenue.com/loc379/th_45314_PhotoOct0644428PM_122_379lo.jpg[/IMG]

Line coming out of that knot is tied off to the power point bight with a double fisherman's.

Power point equalized for anticipated direction of pull, and tied into an eight (you can see the safety line running off to the left):

[URL=http://img233.imagevenue.com/img.php?image=45478_PhotoOct0644306PM_122_541lo.jpg][IMG]http://img233.imagevenue.com/loc541/th_45478_PhotoOct0644306PM_122_541lo.jpg[/IMG]

The complete anchor (yes, I tied it really long):

[URL=http://img160.imagevenue.com/img.php?image=45592_PhotoOct0644332PM_122_556lo.jpg][IMG]http://img160.imagevenue.com/loc556/th_45592_PhotoOct0644332PM_122_556lo.jpg[/IMG]

From there I would tie off the safety line to keep it out of the way, and put in 2 or 3 lockers thru the power point opposite and opposed.

My only concern here is that the power point is single loop, which seems to lack redundancy. I could have sworn that when I learned this a few months ago, we ended up with two loops on the power point, but dang if I can remember how we got there.

Any feedback would be appreciated. I know there's 100 ways to slay this beast, including webbing instead of static line, but this is what I learned.

Bunny ears do not add any redundancy to the system (if one loop fails, the whole knot fails). The OP would be better off using two figure-8s on bights right next to each other with the MP clipped through both.

Not to be argumentative, but I am almost 100% sure that this is NOT accurate. If one of the loops fails, the other loop fails. I believe that there is a video floating around out there of where a kid cuts one of the loops then bounces on the line until the knot fails. Someone with better internet search skills than me could probably find it. That being said, the Double-8 / Bunny Ears 8 is a great knot for anchoring to two bolts.

I first tie off a tree. I have 3 ways I do this, none of which involve a bowline or a separate safety rope but I can see how this would make life easier and safer, but take longer. Anyways, I usually just wrap the static rope around the tree about 5-7 times, then tie an 8 on a bite, and clip the bite to the anchor leg with a locker. I like it since it is really quick and easy, and the friction of the rope on the tree stops any sliding. Yes i know the rope theoretically could start unraveling around the tree then side load the locker, but there is so much friction from wrapping the static around the tree so many times that I have never seen any slippage in my years of using this technique. (works even better with flat webbing, make suer the wrapps look neat) I always give a really violent tug on the rope to confirm there is no slippage. I like it not only cuz its quick, but also is multi-directional. Another fast technique is to just sling the tree quick, tie an 8 on a bite on the static, and clip to the sling with a locker, but that uses more gear and is not multidrectional, but works better for smaller diameter trees. Then I usually klemheist into the static and head to the cliff edge with my climbing rope (lighter and cheaper than a gri gri, but more power to you if u use a gri gri instead. I just like the klemheist since the gri gri bends the rope a bit even when not weighted, and makes it harder to set the master point exactly where you want it since your safety line is also the anchor leg), Then, sitting at the edge, I tie a fig 8 on a bight, clip a locker to it, then tie antoher 8 on a bight next to it and I put another locker on that bite. (1 locker for each fig 8) Then I clip the climbing rope through both lockers, opposite opposing, lock the lockers, toss the climbing rope so the anchor is weighted, make sure the biners are oriented correctl (not side loaded), double check they are locked... tripple check they are locked again, then walk back from the edge, and undo the klemheist. Then I take the free end of the rope and walk back to the second tree I am going to use for the other anchor leg. Before tying the second tree, I verify that both legs are not going to over any sharp edges and if so I pad with a little carpet, jacket, or whatever. Also I make sure the static is settled nice in natural grooves before tying off the second tree. I then wrap the free end around the tree once, then pull it so I can feel the anchor equalized, then wrap it around the tree another 4-6 times, tie an 8 on a bite and clip it to the anchor leg like I did for the first one. Double check the 2 trees to make sure the lockers are locked, and I'm done! (thats why I tripple check the master point while I am already at the edge with my klemheist, so I don't have to go back to double check that part of the set up). I can usually get a TR set up in about 5-10 min with this technique. I know I could do a few more things to make it even more safe and redundant, but I am comfortable with this method for 95% or situations.

You can make the power point redundant with a BFK (big fucking knot), which is essentially an overhand (or figure-8) on a bight... on a bight.

Not to be argumentative, but I am almost 100% sure that this is NOT accurate. If one of the loops fails, the other loop fails. I believe that there is a video floating around out there of where a kid cuts one of the loops then bounces on the line until the knot fails. Someone with better internet search skills than me could probably find it. That being said, the Double-8 / Bunny Ears 8 is a great knot for anchoring to two bolts.

In the situation in the original post, I would double the rope and make a master point that has two loops. I think that is pretty standard. I like redundancy whenever possible, but that is just how I roll. However, a single strand of 11mm static line is probably fine.

First... the super 8 will not fail if dressed properly when one loop is cut. Second, this setup is more or less what I use.

The only thing I do differently is tie the figure eight on a bight on the bight already at the end of the rope. You get a BFK and all you do is clip all THREE strands into your masterpoint. The two main strands form the knot plus the loop of slack left at the end. Bam, super redundant, very quick to tie, and bomber. I can set up faster than anybody using webbing and almost always have enough rope to set up two top ropes if the climbs are close together.

Considering it takes no longer than what the OP suggested and lends peace of mind, why not?

but why not add a level of redundancy when it's so easy to do??