Forgive me since I'm not super electrically inclined, but would something like this work?
https://www.daygreen.com/products/48v-60v-72v-to-12v-50a-600w-dc-dc-step-down-converter-voltage-regulator-w-acc-swtich?variant=11912134950959
My Minn Kota only pulls something like 40 amps at 12v max I...