if your trailer has disc brakes, how much life are you getting out of the pads?
i changed from drums to discs (Tie Down Engr brand) in summer '03. i never tow farther than about an hour, usually less, about 50% thru West Austin hills (these are not mountains).
when i got home last time, one of my wheels had boiled some grease out, so i figured the bearings went south. i got it all apart, and turns out the brakes were the culprits. the pads on that side are GONE down to the backing plate. i checked the other side, and it's not much better.
i've put about 150 hrs on my boat since the swap, and i can't have towed more than about 1000 miles in that time... is this normal??