We saw this in a solar install here a while ago, and it seemed like it might work for us also. RT.SS said the antenna worked well for him.
http://www.winegard.com/rayzarair
It is a kit to replace the head of the batwing Winegard with a shorter, flat, antenna. Of course, they claim it will pick up channels from a least a billion miles away, like they always say.
Big thing for us would be if it is small enough to fit on our 07 190P and not go past the back of the vent cover, or get in the way of the tank vent. Since you are messing with the square supports, they probably could be dinged up to put it where you want, if there is room.
If it will fit that way, we can VERY easily add a third 100 watt solar panel. The 200 watts we have works well 80% of the time, but as with most solar prolonged clouds, trees and rain can make us not break even. If we can gain a bit this easily, it would be worth it.
Anybody else try one of these antennas yet.