Hi chilltime...have you seen how the barcrushers bar catch works ??you have an oky strap that has 2 positions,one for putting boat on and the other for boat off.to get the boat off all you do is drive the boat forward,the catch releases itself.i have a vague idea how other catches work,maybee you could spring load it with an oky or spring similar to the bar catch and just drive the boat forward so it releases itself so you haven’t got some sort of complicated contraption.some body has to bring the car back and forth to the ramp,so all the have to do is set the catch.
what do you think of your hains 675 enclosed ??? I’m hoping to have one myself this year.