I've been milking an injury and couldn't completely stop climbing so I took up solo TR aid climbing (kinda). I've been doing one route over and over again and am just figuring everything out using various sources, ie. mountainproject.com and supertopo.com. I have two questions: 1-how much stress is placed on your gear when aiding? I've never fallen on any of my trad gear and as I've been using various pieces I've started to wonder if they'll still be good to use once I start free climbing again. 2-Is it o.k. to aid on cams (bd c4 and metolius ultralight) in horizontal pockets? I've been doing a limestone route and doesn't have much for gear besides bolts and hooks, so I've been putting cams in sideways.

Thanks for any advice.

Just check you'r cams. If they look good they most likely are.

As far as bending it and mangling it, yes it does do a fair bit of that. As far as weaken it? If something get's pretty dang mangled, sure, it may be weaker but placing a cam or a nut, standing on it, removing it and on and on and on? I wouldn't spend two seconds worrying about that.