Box from Harbor Freight. My outboard was converted to tiller, but not with a full kit. I added a spare kill switch key in case I go over and have someone in the boat with me... they can start the boat and get me! I make sure to point it out to anyone who hunts with me.
I have a 2009 Yamaha, last year of the 2-stroke. It too came listed as 100:1. I looked at the parts list between my 100:1 and the 50:1 models and could find no differences. All part numbers matched. So I run 50:1 and have no issues.
Rollers on a lightly built boat will result in dents. Worst case the roller falls between ribs and the thin planking takes a set. Even worse if the roller lands on a frame and it cracks or gets mis-shapen over time. Bunks that spring and support as much hull as possible are ideal. You are...