to be completely honest, I never had issues with my hawks gripping or kicking out other than the first time using them, with stock straps, and limited personal knowledge. after that no issues but i usually cinched them down with daisy chains and a timber hitch so tight the post would flex a bit (remember these are the 30 inch ones, (im not sure if the 20s flex), and i didnt like knowing it flexed at all. packing them in and out was ultimately the most annoying factor for me, to be honest i got up a tree just fine with them, just like the beast sticks.
resale is pretty much nonexistent on hawks. my stealth stripped 30's are still sitting here waiting for someone local to want them or for me to leave them in a tree as a preset if i get permission to hunt anywhere i can leave stuff overnight (unlikely)