Frusterated about trailer brakes and bearings!

So I was on my way back from OC today towing the boat and I look behind me and see smoke. I have a tri-axle trailer and the 4 rear wheels (which have disc brakes) feel really hot. I made it to a tire shop in Corona and they didn't want to get into it tonight because of parts availibility. I just did the bearings on it this spring too. Seems like there's always something on the damn trailers. I'm taking my trailer into the shop in the morning and hopefully they can get it fixed relativley quickly so we can hit the road. Rant over! :|err