battery questions for electric trolling motor

[Vanmel]

Thanks for all the reply guys, from what I gather getting a higher amp battery is a "better safe than sorry" situation
I found a nice deal on 90 ah second hand deep cycle battery for $100, weighs a ton tho.

[skronkman]

Check gumtree bud, I've seen a few ex-backup batteries on there recently for a good price. In Dandenong I think.