This same fact about "low correlation" has been reported about solar and wind also. The truth is while they MAY not generate power at the same time, you cannot gaurantee that they won't, which means that any transmission lines have to be built for the "worst-case" scenario or the theoretical maximum amount of power that both generation technologies could produce, and utilities won't have it any other way.

Renewable energies are "must take" projects, and without some sort of energy storage mechanism, they do not produce true "firm" power which is what utilities are most comfortable with. "Consistent" power is not "firm" power.

I do agree that co-siting a wind and wave park in the same area would make the area more productive and spread the cost to lease the rights to the property over a greater generating capacity and expect that we will see some of these projects pop up in the next few years.