90% of my set-ups are on crooked trees (side to side). I can set two stands in some pretty crazy trees - using a single strap on each stand. The problem with the hook systems is that the top of the stand is forced to the center of the tree. On most of our cameraman set-ups, you simply have to split the tree angle between the hunters stand and cameraman. Usually one stand is on a crazy angle (to the tree), but still dead-level and secure with only a single strap.

If you are hanginga single stand on pretty level tree - the hooks work great. I just never have the luxury of picking a good tree because I swear god puts the worst trees in the best spots just to make it hard. About half the LW guys (or more) use the hooks. This tells you it's easier for alot of guys. I prefer the single strap on the top button and flexibility on a crazy tree. I think that is the advantage of hang-ons versus climbers for the same reason; you have more options. The hook just limits those options is all.

Word out!