I inclosed my H22 and did it in small steps. This is something I use only a few times a year, as when it's raining or cold and I want to hang out on the boat outside. It made my boat fell like it was twice as large. I started by getting clear shower curtains at Home Depot because they already have a reinforced top with grommets. I could then use bungees and cut the bottom to size. Over time I added sunbrella trim and snaps around the edges to connect the 2 side panels and back panel. If you want to experiment this is a cheep way, then you can always step it up later. I've ben using mine for over 5 years and it's still as good as new because I don't leave it up to weather in the sun.