I don't know if it's a rule, or just a common sense "case by case" exception if you ask, but I've used a 4wheeler twice at Choccolocco to retrieve deer. Both time I was muzzleloader hunting alone during the week, both deer were extremely far from any road, in steep terrain, would've been basically impossible by myself even with a wheeled cart. Each time I contacted the WMA officials and they granted me permission. This was also about 10+ years ago (maybe 12-15 years ago), so who knows if they'd still do that today.
I've always assumed someone like Perry is consumed with hunting. What I mean is it's the only outdoor hobby they have, it's what they do and who they are 24/7/365. I usually lose interest in deer and start fishing by mid January, and give ZERO thought to deer hunting until October again. I don't Summer scout or anything like that (I might make some mental notes of stuff I find in Spring turkey season, but that's all). I know guys (like Perry) who don't fish or do anything else....they are deer-focused-101%, period. They walk ridges in the Summer, run cameras, do all sorts of crazy stuff on rugged public land even in 100 degree July. We're stopping on our first tournament hole on a Saturday morning in August, and they're already three ridges deep checking cameras and hanging a loc-on that same morning. They are shooting bows all Summer, going to the shooting range with a new scope, it's complete obsession. They probably take a few out of state hunting trips for other species in the parts of the year when it's not deer season in Alabama, like I say, hunting is what they do! And most of these guys are single, or have a wife who also hunts, otherwise nobody would tolerate the obsessive devotion they give to hunting deer.
When I kill a deer on public land, I'm just as surprised as the deer was