Advice needed
flippin heck Damon! 🤐
Give us a chance to help you!
What boat is it, how big, what battery, what prop, what motor, if you can tell us these things, with pics if poss, we can help, you might not even need water cooling, if you cannot provide the info, it really is a question that is far too vague to answer. Have you actually run the boat to discover that things are getting hot, it could just be something amiss with your set up