I have a tribalance (http://www.tribalkayaks.com/index.html) and have fished it for tailing reds in the Savannah marsh for 5 years.

The Freedom Hawk looks to me to be an improvement in this technology.

They are pricey at $1800-$1900 and a little heavy at 82 pounds, but I understand that they will come out with a light/shorter version in the Nov/Dec time period that will be cheaper and lighter at 60 pounds.

If you want to stand up and fly cast this is something you should check out.