Has any one gone from using a 24v terrova with 4 batteries to a 36v terrova with of course with three? I am interested in the amount of run time differences trolling. I hope to go to the new ulterra when they get it fixed and currently have a 24 volt terrova with 4 batteries. I'm thinking that the 36 volt will be more efficient but don't know whether it is a noticeable difference.

Thanks,
Don