I considered using a strip of garage door molding but decided against it. The problem is the flap would need to rest above the transom door. Which would mean I'd have to manually peel the molding every time I closed the door. That and it'd look like crap.
Here's the stuff I used:
I installed it like this:
I only installed it that far down on the sides because going any lower caused problems with the hinges. I had to adjust the catch for the latches. I had to move them out a bit to accommodate the added thickness of the weatherstripping. I could have removed the hinges and added some sort of shim in there to let me run the weatherstripping all the way down. But it wasn't necessary as that length down has kept most of the water out. Enough to solve most of my problem. I'd still like to add the scuppers found on newer models. Those drain the water straight out the back onto the platform instead of down holes in the engine compartment below. But it's not been a big enough deal to bother.
had to replace sun/shade screen on forward berth. screen disintegrated. very costly. no way to just replace screen.