I think one of the biggest problems you'll face with a top like that on a walkaround boat is that, depending on where you mount it, you're likely going to smack your head on the tubing or old holders every time you step up onto the walkaround portion of the boat when walking up to the bow. If possible, I'd maybe try to mount it in a location to where that won't happen. Though, I'm not sure that will be possible as the supports are mounted on the top of the gunwales. That's why walkaround styles of boats typically always have the hardtop mounted inward next to the frame on the windows and windshield, as opposed to open bow or dual console boats that are typically mounted to the gunwales. I think you'll either need to add some more height to what you've got or you'll have to mount it elsewhere, depending on how much height clearance you have already. Though if you, or whoever the person is in the brown shirt up on the boat, who appears to be standing taller than the hardtop, I can't imagine you've got the clearance to walkaround without hitting your head on something.