Why wouldn't you want to use a kill switch especially when your out alone?If you have a keyed ignition and 25 bucks it's easy to install and safe.But now its a law.And would be easy to check if trailering your boat to any public launch .So for 25 bucks I will comply with the law.Jet skis had kill switches yearsss ago.I to am grandfather and my boats over 30 years but has key ignition so its easy to install.I would think any grandfather's would want to be safe and return to dock safeee!