Supplier for Hole Boxes? (commonly found on decks of tow boards)

Anyone know of a supplier for Hole Boxs? The ones they commonly use on the top of the tow board decks to mount the straps into.

Hopefully a California/San Diego Supplier.

Thanks

Tom G

I don't know who handles that stuff in SD, but I do know that Fiberglass Supply in Wash. and Fiberglass Hawaii in Ventura always seem to have plenty.   Google is your friend.

I agree fiberglass supply has the best selection of foot strap inserts. Make sure you cap them with a couple layers of 4oz cloth after you bond them in to make them completely watertight. Here's the catalog page, write down the part number and give them a call. My personal favorites are the 3 station 1/4-20 inserts - bomb proof!

http://www.fiberglasssupply.com/Product_Catalog/SurfSailcom/surfsailcom.html