Well, for what it's worth if you don't shoot with proper form it won't matter what sight you use you won't be accurate. I just have always understood that shooting at angle changed the way gravity affected an arrow, as a result it's best whatever sight you shoot to try it out from a treestand or elevated platform to see what happens. For what it's worth I've used pedulum sights for years, and have been pleased. But I've always owned one that is "lockable" for ground use etc. However, honestly I've never tried just taking my 3 pin (sighted in on the ground) sight and climbing up a tree (without resighting it) and seeing what happens like DougE is suggesting, I may have to give it a shot and see what happens.

Gordon