Re: pelican boat repair
I used to have a Coleman Crawdad made out of the same material and no glue I found would stick to the plastic. One thing I didn't try was 3M 5200, but you would need to scuff the plastic with a low grit sand paper to give the sealant something to bite into, it's worth a try. Apply some to an inconspicuous area of the boat and see if it sticks, if it scratches off, it won't work.
The only thing I found that would stick was asphalt based roof sealing membrane, it comes in rolls at Lowes or HomeDepot. Heat up the plastic with a hair dryer and apply a couple patches. This is asphalt based and you don't want it coming into contact with anything that will get messed up with a greasy black mark. Also, I would do and interior patch, not an exterior patch that could rip off.