Playing combat with model destroyers, maneuverablity is a plus.
For years, a friend has had a twin to my ship, and for years mine has
always out turned his boat. For years he tried different rudder configurations
longer, taller, deeper... My ship could alway turn quicker than his.
He would come over and check the center of gravity, and (of course), they
would always match within 25mm. Finally, I had an epiphany... his battery placement,
and Co2 tank placement were all set out at the far ends of the ship. My battery and tank
were almost centered in the ship... The "center of momentum" was different.
His ship was turning llike an ice skater with her arms out, and my ship was turning like
an ice skater with her arms tucked in. My ship turns faster...
This is something to consider if maneuverablity is one of your goals.