i have had a lot of questions about the top for my Sea Knight. Here are a few more pics. There are also isinglas side curtains (not pictured) that i will post pictures of soon (i just havent used them yet). There is also a back portion to the top that fully encloses the cockpit (also not yet pictured).
I purchased everthing to make the top from Sailrite (snaps, zippers, isinglass, straps, canvas and snaps) http://www.sailrite.com
I purchased a kit for the top framing (a "2 Bow Frame kit" to be exact) from: http://www.csctextiles.com/Btop-03.htm
with this kit, you can cut the aluminum tubing down to meet your exact needs. I recomend buying a nice aluminum tube cutter (i bought one from sailrite) to make the job go really easy.
i'll post pictures of the full top (with side curtains and back section) soon.