Modifying otter Boats?

[slapshot]

We run the Big Jon otter boats and we think that they do not run through the water as they should.  Is there a modification that we can do that would allow the otter boats to track better through the water?  Thanks

 

Tony

Slapshot

[BAZOOKAJOE]

http://www.lakeontariounited.com/fishing-hunting/topic/37206-otter-boat/?hl=%2Botter+%2Bboard

[BAZOOKAJOE]

http://www.atommiktrollingflies.com/keels.htm