Yeah but then the mast would have to be low in the front and high in the back and would hit the car
Two thoughts:
Did you consider reversing the H16 on top so that the lower part (the rear) of the tramp faces the wind while you are driving?
Go to an electronics dept store and ask around back if you can have some of the large styrofoam blocks that components and appliances come packed in to use to pad between the upper and lower hulls.
Sheet In!
Bob
