My 9.9 merc has a pendulum dial. Still rebuilding the transom and haven't ran it yet. It going on my son's stick steer side pull jon boat. I put an older 55# MK on the back on my crappie boat... just clamped it onto my transom. Put a PWM on the trolling motor with a big foot on off switch up front. And yeah it took some getting used too. With TM to port side of the keel it doesn't push center line. So sometimes I am going forward but at a crooked orientation. lol Almost makes me drunk and definitely makes me look drunk. Have you considered one of the electric motors that attaches to the foot of your big engine. Or possibly a troll plate. I'm sure you have but wanted to give you food for thought

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