Rudder Area Clarification

I am going to make some new rudders today, and I wanted to make sure I have my math right.
So according to the rules, a 3 unit ship gets two square inches of rudder. Since my ship has two rudders, I get an extra one inch of hard area. So dividing that three square inches into two, I get 1.5 square inches per rudder. So if I make each rudder 1 inch wide by 1.5 inches long, I should be good, right?

Thanks,

 

What size props are you using?

 

1 3\4"

 

The reason Abs asked about your props is that accepted wisdom to maximize turning is to match prop size & rudder height (if possible) so that maximum amount of thrust is diverted

 

Correct. You can play around a bit, but maybe try a 1.5" prop with 1.5" tall by 1.0" long rudders.