Fixed Outboard Tiller Extension 66cm

I needed a tiller extension for a small 2.7 meter dinghy, using a 6 hp mercury outboard. I am often the only person travelling in my dinghy I prefer to be sitting on the dinghy seat rather than sitting on the tubes. The tiller extension allows me to do this. What I have found though is that some tiller extensions do not clamp well to the rubber grip on the outboard, This particular Tiller extension has four nuts to clamp down on the rubber grip, this makes for a very secure attachment. For this particular tiller extension. I feel that the Mercury 6 hp outboard probably at the limit of what this extension can handle. The diameter only just fits inside the grip component