Goose won't turn

Hey all
I downloaded a great Grumman Goose from here, but the thing will NOT turn once its in the water. I'd like to be able to taxi it around in the wet stuff. Is it the fact that it has no water rudder? Can/how would I add one if thats the issue? Any help is appreciated
I downloaded a great Grumman Goose from here, but the thing will NOT turn once its in the water. I'd like to be able to taxi it around in the wet stuff. Is it the fact that it has no water rudder? Can/how would I add one if thats the issue? Any help is appreciated