its archery period! If you don't have a rest, most will struggle to shoot one as good as the did their compound. What was said about movement is spot on, I could raise my compound straight out smooth and stealthy then anyone who knows how to hunt deer or any other big game at close range understands when you can draw, or bring the bow up, but if your used to a compound like I was, at first they are the clumsiest contraptions on earth, easy to bump a limb and spook deer till you get used to them!
It is no different than once you get used to a crossbow, if you never shot a compound, it would be totally basackwatds! I only practice with either off hand, with the crossbows' I do use any rest I can get in the field, but in real life field conditions we all know that aint always possible! I feel I was much stealthier with a compound, but today with several back neck and shoulder injuries, I'm glad to still use a bow!! I have done this for decades, and to think it aint still archery, and everything to do with archery hunting still applies would be stupid,,, It is still silent up close and you need to know how and when to make it happen or its all over.
If I had a choice, I'd still be toten a Hoyt, for me it was handier, and just as deadly, but I never shot IBO, and 13 years ago the Havoc Tec destroyed more than one double shoulder, and at 540 grains w/ my 70# 30.5" draw, I dont remember ever not picking my arrow up out of the dirt on the other side of the deer!