Once I started wheeling my Samurai with no doors and no top, I have never gone back. A little later I removed the windshield too, and haven't put it back on in several years. I like the completely open feel even in the winter.
I used take the doors off to wheel then put them back on to dd, then I quit dd'ing my trail rig and it slowly got to the point where the doors didn't fit anymore.....
I always took my full doors off. Coming up school bus at wind rock I had a boulder come in the passenger side while my wife was sitting there inches from her face. Traded the full doors straight up for some half doors and haven't taken them off since.
Would it have ruined the half doors? Probably, but better them than my wife
Done the no doors thing. I actually prefer having my doors on in the 4Runner. Nice in case I dump it over and a rock tries to come through. I would have caught one right to the shoulder on Crawfords Cry a few months ago had the door not been there. Gonna roll with the full doors til they are almost too mangled to open. Then I'll pry em open and get another set. Mud weekends its nice and cold weekends its fun to roll with the heat on to at least keep my feet warm.
Full cage. Tube acts as protection. I do miss a roof occasionally. I've still got firewall and windsheild, with a tarp on top I stay toasty in the winter.
Half doors. Actually cut down a set of samurai doors to have half doors for it before last big trip. Gives a little protection, keeps mud out of your pants and shoes, doesn't really affect visibility.
no doors mostly because in the XJs especially, you can't see anything!! i like to be able to look out my side and see the obstacle and the passenger same thing..easy for them to spot you on their side.
I used to like no top and no doors but as I've tried harder and harder stuff, I like having the tube work and skins beside me (similar to half doors) and an aluminum roof for protection. I've seen quite a few dead tree limbs fall when someone backs into the tree. I'd hate for that to come through the top.