I think FCCC is the only place that had modified rowing machines that would work for DB/OC, and I don't think any have a kayak erg. if i had space and $2000 laying around, i'd buy my own.
well if you have half that, you can get one of these:
http://www.paddlingtechnologies.com/prod02.htm (Kayak Erg)
i tried the C version of this product at the SF Festival and was pretty impressed (especially given the price). Unfortunately the K version wasn't operational because the demo guy had forgotten to bring the K-paddle attachment with him. But if it was anywhere near the C, then it should be pretty darn good.
Canoe erg here:
http://www.paddlingtechnologies.com/prod01.htmjust realized this is actually a canadian company and i posted a link to an american distributor! Here is the actual company, from Quebec:
http://paddleone.com/content/view/14/27/lang,en/AND it appears that Waters Edge is a distributor!