Parratt1, you didn't tell us about your favorite fishing holes & that can make as big a difference as your favorite styles.

My main hole is a 1,000 acre TMO reservoir that is over 3 miles from the launch ramp to the most distant point. That means the TM has to work hard to get me to the fishing spots, troll all day, and then get me back home. In the past I relied on 12V motors, but after getting a 24V Terrova I never looked back. The faster running speed means more time with bait in the water. Longer running time is strictly a function of the number of amp hours your battery(s) can deliver.

My main fishing boat is a 16' Sea Nymph full V with an 80# 24V Terrova. I carry two sets of 100+ amp hour batteries and have never "limped" back to the dock. One word of caution--if you set up redundant batteries, don't hard-wire them in parallel. Use a switch. A-B-Off is best, but cheaper setups are just as effective. Batteries age at different rates and when you hook them parallel, the stronger one(s) feed the weaker ones. This wastes power you want delivered to your TM.

Yikess makes a good recommendation about shaft length. Mine is 60" and that works very well.