Re: launching and retrieving
I used to go to a tiny private ramp where the guy would watch you from his trailer, and if he didn't see you put money in the lock box (or find it in there), he'd chain your trailer tires while you were out. He was nice enough to unlock them for only the cost of the ramp fee. Everything was clearly (legally) marked, and he even had tow-away signs, but some still chose to ignore it. He was well within his rights to have the car and trailer towed, but he let people off with just a bit of embarrassment. I know of nobody that gave him too much trouble over their chained tires, since if they did he could just call the wrecker right then to have the crap hauled off of the property. Plus he was a big old dude with guns and dogs and a meaner 'n' s**t family....needless to say I ALWAYS paid, and waved my money at the trailer before putting it in the box.
Bottom line is: don't steal, which is taking something that's not yours without permission. Even if you can get away with it or you think they "deserve it". It was even important enough to make into a Commandment a couple of thousand years ago to keep things civil.....and it works the same way today.