I would start by getting 4 of the shorestation canopy posts that slide in your hoist. The one that slides into the winch will be shorter, assuming you have manual hoist. I may have pictures of these somewhere, pm me if you need, or get from dealer.
They provide a "pad" for the canopy to set on in the four corners. Once that is done, you need to measure and figure out what is next. Should not be too difficult, provided the canopy frame and hoist are the same width. It may set right on it you may need to fab up a new top for the posts. I think the cap is steel so you can weld to them.