I've met two different lift-roof types on the broads.
The first was like a 1960s volkswegan camper van, side hinged with a canvas panel - proped/tensioned with two wooden struts. this worked well and was easy to use.
The second was on a brand spanking new 37ft graff rigged cruiser where the entire cabin top lifted on four spring-assisted telescopic legs each of which could be locked with a pin. Deploying this contraption meant unshipping the boom (23ft) and moving it to a sort of spare gooseneck before lifting the lid, against the tension of the new canvas... and inserting the four pins - the roof needed to remain dead level throughout the lift or it would stick and......
Possibly the worst piece of mechanical engineering it has ever been my misfortune to meet.
But a great boat and a wonderful holiday.
Complicated problems usually have simple solutions - which are almost always wrong.