I was hoping that a few questions I had could be answered. I've tried using the search function but haven't really been able to find the proper threads to my questions. Here's the scenario, currently, I have an Old Town Guide 147 that my girlfriend and I take out fishing primarily in rivers/lakes around new england. I am looking to purchase a trolling motor/mount/battery that would best suit our needs. The total weight of myself, girlfriend and gear is roughly 300lbs. Is a 30lb thrust trolling motor going to be enough to handle 300lbs + weight of battery? Also, from what I can tell the general consensus seems to be that a 30inch shaft is plenty, but if the 30lb thrust motor isn't enough, is a 36inch shaft with 45lbs going to be able to power us? Thanks for all the help.