Scupper Size Question

New owner of used Field and Stream Eagle Talon SOT. What size plugs do I need to keep my but dry this winter?

Universal plugs
Did a search of that kayak and it appears Dick’s Sporting Goods sells it. They also sell universal scupper plugs:



http://tinyurl.com/phb5fq3

and if
these plugs go overboard, the plugs float.