I have turned some and sealed with val oil and thinner. They do soak up a bit of sealer, but as you said - they are made to fish. I had a white pencil popper that I used on a bluefish blitz....When done the wood was chopped up pretty good. I lost that one to a blue and would like have seen it after being in the water for a while.
My $.02, Pooplar is good for masters for the dup, jigs and for interior projects... for plugs why waste your time with sealers, epoxy or whatever to get a sub-standard plug, and it turns like crap!
"The lips stand out because she wants to suck on your Pikie."....Mike Laptew Van Staal Service/Repair Technician