Heck, I launch my 6200# Chris Craft with the chain and winch unhooked at the steepest launch... You have to remember to go easy and don't jam on the brakes...I have never lost a boat ever. I dangle a line off the bow and have my helper grab it as it slowly slides off the trailer in the water ...or if I'm by myself I let the line drag on the ground, stop when the boat gradually drifts off trailer, get out grab the 25' line and guide it to the dock area and tie it up...all by myself. When I load it up, I drift up on the trailer reach over the bow, and hook on the winch cable, give it 3 clicks...done.
I drive up with the 26" Chris Craft with the trim up so as not to damage the launch area...at the end of the trailer the water is plenty deep so no erosion is possible from the prop.
Karl