Hello. It just so happens I`m in the proccess of building a pilot house for my 60ft center cockpit.First you need to consider the wieght of your new addition. For me it really didn`t matter my boat comes in at 64,000lbs. 2nd, you don`t want it to be to tall. Allow yourself enough head room while standing in the cockpit. Floor to ceilingon mine is 6''7". I matched it to my salon hieght. Consider arching the roof for rain run off and put up a gutter rail so that you can direct the run off. Also if your engine room
hatch is in the cockpit, you will need an equal size
hatch in the same above location on the roof in case of engine removal. The
hatch should be see-thru so that you can keep an eye on the sails. On my construction I used 3/4" hard wood no-void ply-wood from Home Depote @ $40.00 a 4x8 sheet. The windshield is framed in the same with 1/2" temperd glass (smoked gray tent). The whole wood stucture is glassed over with 2 layares of 10oz. woven mat. I weigh 225lbs. and I can jump up and down on the roof and I also shoulder blocked the windshield from a 10ft run and it bounced me back on the deck. I figured it was strong enough. There is alot to consider. Will there be a traveler system mounted to the roof,
Lighting, Speakers. Electrical and so on. I hope this helps.
Chuck