Tiller Tamer Solution
I have two solutions for your tiller query. The first is called a Louisianna Tiller Tamer (I believe). This is cheap and easy and searchable on the net. Take a rope and afix it to one of the cleats on the transom of the boat. Wrap it two times around the tiller and secure it to the other cleat on the transom across the boat. The tension should be such that you can slide it forward along the tiller and it will tighten. This is the "engaged" mode...the mode of self steering. To return to manual operation, slide it rearward, but let it stay secured to the cleats and tiller. The tiller extension location does complicate this on the H-170. Experiment with location.Option number two is taken from my Melges M-16, yet not installed on my 170 (or even tested for that matter). The old M-16 had twin tillers and twin rudders. Each tiller was attached to its own rudder, and connected to the opposite tiller via a crossmember, thus they moved in tandem , total harmony. Picture a letter "H". The two side bars, the "I I's" are the tillers and pivot at the top, left and right. The crossmember is the bar in the center, the "-".A bungee cord was attached to the boat from behind and from the each side, to the center of the "-". Picture a "V" sitting on the "-" of the "H". This "V" is the routing of the bungee. Kinda of makes you think what the "H" am I "T_LK_NG" about. Stay with me!!!Any way what this does is provide for self centering of the tiller. The tiller pops back to center when released...(how many times have you accidently let go of the tiller during a tack? I hate going round and round in those tight little circles!!!) and short periods of self steering (what you want). The only draw back is slight resistence when you turn.What I envision for testing would be to afix each end of a bungee to the the cleats on each side of the transom. Afix a small "s" hook to the center of the bungee. The "s" hook needs to be secured to the bungee so it does not slide each direction along the bungee. Hook the "s" hook into the open fore end of the tiller. Play with the tension until the tiller pops back to center, yet allowing for free turning.If this works well for you, afix 2 small eye straps to the boat to afix the bungee to (freeing up your cleats) and drill a small hole in your tiller to afix the "s" hook to (possibly "s" hooks on each end of the bungee so it is removable). It will cost only a few bucks and you get the satisfaction of saying "I did it myself". The spouse will think of you as a great sea master and the kids will look at you as an inventor second only to the guy who invented Crayons. You will realize self-actualization as only Maslow could predict. Your life will change... and what did it cost you? Five feet of bungee and an "s" hook (and possibly 2 hog rings). My, my, my... you friend have enjoyed the High Life.Good Luck.If you want to see a digital image of the set up on an M Scow, reply back to this post and I will e-mail one.Rusty