I'm pretty sure TR-1 offers two different models. One has all the bells and whistles, does zig-zag patterns and stuff, and the other just does throttle and steers the boat. Not sure on the prices of the two units.

I've fished with John Keizer, Puget Sound Salmon Charters, and he's got the TR-1, I tell you, it looked pretty sweet and worked perfectly. I know a couple of other guys with them, and haven't heard any complaints.

-N.
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