My trailer was looking pretty bad with peeling paint and rust, and hardware that was starting to rust away. I dropped the boat in the backyard and got to work.
I've already done some stripping on the gooseneck here with a cup wire brush on an angle grinder;
You can see how rusty the frame was;
Rusty metal primer on after a few days with the angle grinder;
Rustoleum on top;
Frame reassembled;
Finished product;
Took about 2 weeks of hard work and a total cost of under 200, including a new winch, all new hardware, new lights, paint and supplies.