Looking for pics or instructions on this liftingdesign

I decided after a long time of designing and starting over and designing something else that THIS design will suit our needs best. I would contact the jdale to ask him but I see this thread is from 6 years ago and he only posted 8 times. My guess is he doesn't come on here much anymore.
Does anyone have any info on the roof design, hinges, sealing it when closed, locking it in place, waterproofing etc?
Thank you in advance for any information you can provide.
Does anyone have any info on the roof design, hinges, sealing it when closed, locking it in place, waterproofing etc?
Thank you in advance for any information you can provide.