15 ft aluminum grumman , semi v , with a 60 inch bottom . What's the best bang for my buck trolling motor to put on it ? It's has a 20 yr old 30lb thrust motorguide that's just wore out on it and I wanna replace it . Does anyone know if motorguide and minnekota alligator mounts mounting holes are the same ? Can I mount a Minnekota with out drilling new holes ? I'm gonna stay 12 volt , but will probably buy the most lb thrust I can with out spending stupid money on my jon boat .