I always leave mine in high gear, short track or long track and i also run the cheap baffled pans, the only time i bump mine to nutural is if i break something. Obviously a door car cross member type step pan has less chance of the oil running too the front. Of course an accumulator is cheap ins.
Now time for the giggles :lol:
I would worry about bumping into reverse even with a lock out shifter. S0 40 plus yrs ago before all the high dollar shifters was even thought of and i made my own shifters. I took to the redneck solution (will still work today) if you want too be absolutely certain of not hitting reverse. I took a small cabinet type hinge and bolted it to one side of the shift gate, and before i started the run i would just flip over the hinge so it would be impossible to go past nutural. I did that with my early blower cars because i did used to go to nutural and shut down the engine at the same time i pulled the chute.
JMO
Zip.