Lou, fantastic conversion using the ramps. You're the first, but not the last, I think.
Like Thrashie suggested, it looks like the perfect base frame. Seems like you used the straight highland model I posted the link to.
To clarify - the combined weight of 2 ramps is only 15lbs so much lighter than some of us are thinking. Really closer to 7lb each when you shave off the unneeded parts. Around 600lb carry capacity EACH. That's stellar.
Thrashie - when I saw those online I thought - Man, that would be cool with a clear or colored plexi sheet for seating. "Glass-bottom" Hakas!
Lou, the panels you are using are cool too. Come in a variety of great colors, (plus yellow).
You metal Haka guys are on a roll, but I think you're going to need something to tame those sharp edges, (Supermodels hate getting scars). There must be a nice rubrail/door threshold molding or wide 3M car molding that will finish the ends off properly. Or you could wrap the edges with a soft seatcover material, as we've seen others do.
As far as cushions goes - it's a personal choice. Pad or don't. Either way, it's more comfortable than the Missionary position. I never feel any discomfort, (till the next day).
The only real consideration, I think is that when you go with closed seating (as opposed to rails or webbing), you will forfeit the traditional Hakas wind/wave cheating properties.
We all use these boats with different goals - so any Haka design that suits your personal style and sport agenda is worth posting here. Bring it on.
BIG mahalos to everyone who has chipped in!
I do have some clear polycarbonet panels and toyed with the idea of using some, however even though the material is almost unbreakable it is softer than acrylic and would scratch to a haze quickly with abrasion. Additionally I would have to cover much of it with non skid whcih would have defeated the purpose of using it in the first place. It is also heavier and much more flexable than the alumilite.
I did use the straight Highland model from the post, and the panels do come in a variety of colors, however to get gust the right shade of papia you have to do what the panels were made for and apply some sign vinyl.
After they are the right color then it is time to add the black non skid racing stripes.
The sharp edges are covered by rolling the non skid tape over the edges and adding pvc end cap strips to protect the super models [img][IMG]http://i1081.photobucket.com/albums/j353/louis_deluca/Hobie%20Tandem%20HAKA/IMAG0742.jpg[/img][/img]
I plan to cap the tubes with black 1" square plastic caps that I haven't had a chance to get from Graingers yet.
Thanks for all the positive feed back, I will post improvements / modifications as I develop them.