there are 3 greek stores that may be fairly easy to access for you guys from new york city, especially if any of you live in queens.
ADGREEK is located in Queens.
There is also
Something Greek out in Hempstead which is not very far out on the island.
Plus there is .
Alphabet Greek in East Meadow. I know that's in Nassau but not sure how far out it is.
They all have paddle making supplies so you could probably work with that to make something. And also being from tri-state area which is big on local greeks they might be easier to deal with when it comes to customizing things depending on your time frame.