installing foam seat?

that’s what I want . . .
an effective but not for-the-ages attachment – in case I change my mind.

Is this tape widely available, say at the big box stores if not a good hardware store?

G

I use velcro
Biggest advantage is it doesn’t damage the hull in case you decide to sell the kayak and the next buyer doesn’t like the seat.



Get maybe 4 strips velcro, as wide as you can find, maybe 8"-10" long.

No
Barge Cement is a brand of contact cement

yes
You can get carpet tape at a good hardware store, and likely at a big box store.



There are two kinds. One is just a plastic film, like cellophane packing tape, but sticky on both sides - Don’t get that one.



The one you want is a fabric tape with a grid of reinforcing fibers in it. It’s much thicker, and stronger.