W28 with a bimini? Yes, of course!
Namaste has come with one. I have since renewed the canvas but the principle remains the same. A big U shaped tube attached both ends to boom gallows and supported by cross-members also on boom gallows. Very simple, relatively quick to dismantle when needed. Usually stays up though. Protects from rain and sun. When not sailing the gap between dodger and bimini (required there for main sheets to travel) is is velcroed with a piece on canvas providing an uninterrupted cover. Here are some photos of Namaste where bimini is visible ==>
click.
And yes, you are right I cannot stand right up with my 6'2", but why would I? I usually lie down in the cockpit ;-). The bimini doubles as a table when motoring in calm waters: I put a chopping board on top of it, stand up behind boom gallows, tiller between my legs and my coffee on the "table". A bimini is a must on a W28, especially in the tropics.
Cheers,
Voytek