A lot of work... Not as hard as it looks though. Lots of rests and good feet along the way. You get 8ft to 10ft of hard climbing then a decent rest with about three good rests along the way you could have a picnick (sp?) on. Had two BD #4's 1 #5 and two #6's. Wish I had only brought one #4, 2 #5's and one #6. Plugged in a yellow alien down low too. That's a solid rack, don't bring anything else cuz you won't use it. Didn't think it was much harder than the Generator Crack, just different.