Sportco had them the last time I looked, Buoys and all. Or you can take the old trusty Digi-cam , snap a few pics and measurements and have the brother in-law weld one up for you. You can find info on the web on how many lbs you need for the the size boat you have.
Sportco had them for a decent price though, and they were galvanized, so just pick one up if you aren't into metalwork.
And no, its not going to cost $500 for that set-up.

Ng
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C/R > A good thing > fish all day,into the night! Steve Ng

Dad, think that if I practice hard, they'll let me participate in the SRC ?
[Gig Harbor Puget Sound Anglers....Join your local chapter. CCA member