Need some advice gents and ladies. My father-in-law has a John boat with a 25hp merchandise w/elec start. He's getting arthritis pretty bad and now thinking of adding tilt/trim so he doesn't have to muscle the motor up and down. Any experience or suggestions on aftermarket units? One qualification is that our can't add more length to the overall boat/motor/trailer because it just fits in his garage the way it is. Thanks!