5200 is a boat adhesive. It might be worth checking to see what its temperature range is.
It comes in a regular slow-drying version and a fast-drying version. The slow version sure takes a long time to cure, several days and maybe a week. Both have about the same strength.
The slow-drying version is the only kind I've used, and that was on a boat. It flows away from its intended joint position rather remarkably. It's necessary to have a dam to keep it from leaking out of a joint. It will not cling.
Almost forgot to mention - it's rather difficult to remove after it cures. It's not something I'd use on a canopy for that reason. Any repairs or rework would be difficult at best. I think I'd use the Sika products, since they are both intended for the purpose and well-proven, and there's a lot of history that you can access here at VAF.
Dave