Weather seal, the strip between the canopy and the pickup bed. I have a leak. Shouldn't be rocket science. Remove the tie down bolts, remove the canopy, strip the seal, clean surfaces, and replace.

But I found "canopy weather seal" at Home Depot, and I wasn't impressed. One sided adhesive on a sponge strip.

I'm looking for something heavier duty. I'm betting the local marina supply shop has something.

Any suggestions?

Local marine/industrial supply has dense foam weather seal stripping. Better adhesive backing. Black to match the canopy and truck! Widths from 1" to 4" and sold by the foot.

This stuff is used for "hatch seals in marine applications. Perfect!

your local topper store has very good camper seal tape.