OK ... So this morning I head to the lake for a few hours of fishing. I put the boat in, park, and go back to look at my bunk boards and side boards. I helped a buddy replace his over the weekend so just wanted to check, no problems, everything looks good. After a few hours it's time to load up and head home, put the boat on the trailer and pulled up into the lot to wipe it down, no problems. Now I head home, about a 30 minute drive, and back into the driveway up a small incline. When I get out and walk back to the boat I smell brakes. The hubs are HOT, I spit on them and the water turned to steam instantly. No problem backing into the drive or any noticeable drag coming home. My buddy stopped by and we pulled the wheels off, everything looked good with the pads and caliper. The wheels were covered with a light coating of brake dust. We checked the brake fluid, all good and no air in the lines. It seems like the brakes are just not fully releasing. It's a 2011 Marine Master trailer. Any ideas on what it could be?