Easy "fix" for starter kick-back

When my 493", aluminum headed 12.8 to 1 motor gets hot, it just stalls the starter on the first try, but usually spins it on the second try. Sometimes. it's to easier to start if I spin the motor with the starter and then flip the toggle switch for the ignition to light. I wired in a cut out switch to the ignition box using a relay.

I heard guys with roots style superchargers do the same thing, but in their case to avoid blowing the blower off the top of the motor. Could be. I never had a blower on my car.