The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
At the back, I used a couple of cargo straps connecting the rear of the bimini to the catbird seat aft rails.
The front of the bimini uses the included straps. They are hooked to the same eye used for the forward connection of the cockpit lifelines. They are easily disconnected temporarily to make room for loading/unloading.
The bimini weathered several fairly strong thunderstorms on the mooring and survived without issue. So far, so good.
I've tried adhesive backed velcro for applications inside and outside the boat, and the velcro grips so tightly that it pulls the adhesive off whatever it's stuck to. You could sew velcro to the fabric, but when used outside, velcro deteriorates in 2-3 years of sun exposure and needs to be replaced. Don't try to sew on adhesive-backed velcro. The adhesive gums up the sewing machine needle.
IMO the best solution would be to install a lapped zipper. The zipper on your trousers is a lapped zipper. The fabric cover not only looks nicer than a bare zipper, but it also protects it from the sun.
If you don't have a sewing machine yet, you should consider one for simple boat canvas projects. I have a light weight machine and a heavy duty Sailrite machine, but use the light weight machine the most by far. My light weight machine is a Brother CS 6000. It's easy to use and has a system that helps thread the needle. Once you learn to use it, you'll also find it handy for mending clothes occasionally and sewing on buttons.
Steve Milby J/24 "Captiva Wind" previously C&C 35, Cal 25, C25 TR/FK, C22 Past Commodore
This is very similar to the design of the bimini that came with our boat, custom made by a shop in the puget sound. The seam for the backstay on ours is a typical vislon zipper in a large size.
I'd love any ideas for changes (or different designs) that would be better for trailer-sailing. It takes us longer to get the bimini assembled and set up than it does to raise the mast. Wrestling the bimini out of the cabin, or working around the bimini frame while it is stowed in the cabin, is also a huge hassle.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.