I recently purchased a 16 Xpress panfish model. The boat is a flat bottom, trailer came with boat from the factory it's a Back Tracker trailer 19' - boat and trailer all in very good condition. The trailer originally was 20' the previous owner cut off 1 ' so he could get it in his garage. The problem I have is when launching the boat by myself - which is what I always do. After backing the trailer so the wheels are under water I still have to muscle the boat off the trailer. I start by lifting the bow up slightly then pushing it back about 3 feet , then I have to reposition my footing pushing off another 2 or 3 foot before it floats freely from trailer. It's a small motor so I don't motor it off of trailer. In the beginning when backing the trailer in the water it does seem to float in the back end with the trailer wheels under water so I'm sure I have it in deep enough, vehicle wheels just at water's edge - is it possibly I'm going in too deep? The trailer has 4 flat carpeted bunks. The 2 bunks in the center are about maybe 10' long the 2 outside back bunks about 4' long - carpet in good shape. One would think with such a small boat being a flat bottom it would float off the trailer much easier. The boat is welded aluminum maybe 600lb. I thought about trying to tap the brakes to force a gravity launch or possibly buying rollers - or wetting the bunks down before leaving home. It just seems like I shouldn't have to go to these extremes to launch this boat. Loading boat back on the trailer goes smoothly, I get in the back of my pickup and with rope in hand I pull it on the trailer until it stops about 3 foot from the winch. At this point I get out of the truck get on the trailer hook winch strap on and winch it to the bow stop. What am I doing wrong?