TT / Give Brian a call at Fastech in Plymouth. He is a really good welder and is a short hop from the rock. He was building an insane looking tower on a Seacraft when I picked up my boat. He also did Boyle's Radar arch on the Pathfinder. Although we only had small tops fabricated, I know guys with full T-Tops that are very happy, and he will stand behind his work. I don't think he has updated his site in years, but here you go
www.t-tops.com
