So I've been messing about with my SIB trying to get it to plane and decided I needed to make a tiller extension so I could get a bit further forward.
I used some 40mm wide 1mm thick steel pipe, which fits the tapered rubber handle on my Mariners tiller just perfect. This is how I did it.
Cut the pipe to the desired length
Cut two slots about 10cm long into either side at one end, then gently lever out the two sides taking time to offer it up to your tiller for a snug fit as you go. File off any burrs once your done.
I then wrapped the two ends in gaffer tape to finish off and went out to give it a go. Not the most visually pleasing finish, but It certainly does the job, it stays in place perfectly and still allows me to use my kill switch cord with no issues
The finished result (about 40 seconds in)