There are quite a few mirror movers on ebay. I've got some that look
like this. I just moved my existing TJ mirrors to the body.
I find that it's hard to see the passenger side mirror with my soft doors on. It's no problem with hard doors though.
If the mirrors move when opening the doors, then either get a set of
adjustable door straps, or take your existing straps and twist them - this will shorten them a bit and not let your door open as far.