Channel Steel Fenders
Maybe the best $250 you could spend...
I understand. I really do. You TRY to be careful when loading and unloading, but sooner or later, something gets into the fenders and tears the living tar out of them. It's an age old problem with trailers and we have a few simple solutions to the problem. You could do removable fenders, which are quite cool indeed. Just lift them off out of the way when you are worried about them being hurt. But, then you have to worry about losing them, or worse... running over them because you forgot that they were under your trailer for safe keeping.... I know, i did that to a set once.
The much more durable and simple approach to not damaging fenders is to create a fender that CAN'T be damaged.
We call them channel steel drive over fenders and they fix a TON of problems for not a whole lot of money. Read on.