Hi Bill, Welcome to the forum. Each modeler will have there own idea of what is the best for towing, A good average tug is the portgarth type of tug, I run a Portgarth it's 38in x13in Twin screw, Direct drive, steerable kortz nozzles, independent throttles, bow thruster. This is not every ones choice, also it as a working main & Gog winch which do's help, this type of hull gives you room to put your extras in, Battery's three 12.7amp & 6.5amp for the rx. Hope this is some help to make your choice. Regards
John POLL