Fiberglass supplies on Cape Cod?

[erebus]

Calling all Cape Codders:
Anybody know where I can get some penske/coosa/airex PXc board locally on Cape Cod?

Seems Lewis and Kellogg don't supply marine lumber.
I can order it from Jamestown, but the shipping is a bit egregious. Wouldn't mind picking some up somewhat locally if possible.
Might even be willing to drive west of Hyannis!

Mainly just for re-coring my hatches.

Thanks.