I was bench shooting my xbows, got an old wood door on two saw horses and one of those automotive stools w/ about 5 wheels. I got lazy and started cocking them while sitting down on it. Not too hard for Vixen, Phoenix or Paradox. Did it w/ E'max ONE time! I could feel it starting to slide, but hurried the last few inches w/ rope cocker and got it done before it came off my foot. Could have been a Forrest Gump moment!!
[stupid is as stupid does]

Here is another tip for you Excal guys. Now bear in mind this has NEVER happened to me, I'm only relating a story a friend told me, lol, but if your limb hits an object while firing, moveable or not nasty things happen real quick! If you're left handed like me and your right limb hits something your stock wants to violently fly to the left. However, if your left limb does same, the stock will attempt to launch your dentures right outta the side of your mouth, bypassing your lips. Sure glad I've NEVER done this!! lol.