Re: To disconnect or not to
If you are going to use the motor within a week, leave it connected. If you are not, pull the plug and run the engine to drain the carb. Been doing that since 1955, so I guess it can't be too bad.
If you leave the boat outside, cover the boat so the tank and hose aren't in the sun. If for whatever reason you can't cover the boat, at least take the tank and hose out and put it in the garage.