Trolling motor

[PowerFish]

Is anyone using a 24 Volt ultrex with spot lock on a Z520C? If so, how do you like the performance?

My 520vx had an 80# Ulterra on it when I got it. I honestly never had an issue with power with that motor. I went to the 36v Ultrex when I changed it out, yes more power. The biggest difference I noticed was that the 36v Ultrex will go all day, dawn to dark. The Ulterra with 24v would get weak after a day of fishing.

[ChuckTR21]

The BEST would likely be a Motorguide Tour 109 or a Minn Kota Fortrex 112. These guys just worked and lasted forever.
If you're looking for a new GPS model, go read several pages of the Electrical TM Forum here and decide. All the new ones have issues, strengths and weaknesses.