Trolling motor "GO" Button

I always struggle to hit the sweet spot on my trolling motor button.  Frustrating to mash down the button a half-dozen times before it starts to activate.  So I  found this metal disk at a steel supply place.  It's designed to use as a candle holder bottom.  I filed 4 grooves on the edges to clear the motor button supports then glued it on top of the original button with some Shoe-Goo adhesive.  It has a higher arc than the factory button has so it's a lot easier to find with my foot and activate.  Here's some pics: