This one was a near-miss....launching my 99 Sport Nautique by myself- back down the ramp, get out to unclip the turnbuckle, realize that I need to back in a foot or two deeper, get in truck, release parking brake, engage reverse, back up a couple of feet, engage parking brake, unclip turnbuckle, start reversing the boat off of trailer and right as I am clear of the trailer I notice the reverse lights on my truck are still on. The parking brake seems to be holding just fine...so I do my best to calmly circle around to the dock (a strong crosswind made circling back necessary) and scurry over there to take the truck out of reverse. Feeling lucky that my truck and trailer did not follow the boat into the lake.