I am wondering what is my best option for an emergency trolling mitr for my boat. It's 20 plus years old and I just don't want to be stranded if something gos wrong on the lakelQuestion is how big of a trolling motor would I hav to have tio get me back to the dock, or should I get a small gas motor either 2.6 hp or 5 hp that I can e to get back home . Which would work to push my boat. Thanks.