I am also considering making my own H-bridge. I have seen that it might be a challenge, but I am interested in learning electrical engineering, I am up for a challenge, and I might be able to have a heftier motor controller.
By the gate to source and gate to driver, are you talking about the pull-up/pull-down 10k resistors, or is there another place you are talking about?
I know that I need (if the motors don't have them) a capacitor between the motor leads, but where are you talking about?
For the fuse/current sensor/etc. would that go between the motor and the h-bridge or between the batteries and the h-bridge, or both?
8. There is a 30A circuit breaker in the battery wiring. Would that limit the current available to the motor so that a 30A-40A (continuous amp rating) h-bridge would be alright even though the motors can themselves can pull more than that?
If the current gets too high would I then lower the signal I am sending to it, or would I lower the voltage going to the motor controller?
Any recommendations as to what continuous current mins. for a 75A motor? I have seen some places where the recommend twice or more of the motor's current rating (for me 150A or more) and other saying that motors usually don't get to the rated current and you only need like 10% more (82.5A). Which is more accurate to what is needed to safely run the motor?