It is a curious thing. People tend to look at the more commercial operations while failing to notice the quite good, independently owned kayaking resources in the same area.
Here are three links - try to make one of them work for you guys to get into a pool. I guarantee you, initially learning to do on-water re-entry is a lot more comfortable in a heated pool than in spring temperature water.
Potomac Paddlesports http://www.potomacpaddlesports.com/
Check out their banner - they obviously have access to a pool.
Potomac Kayaking Company http://www.potomackayaking.com/
Cheseapeake Paddlers Association - http://www.cpakayaker.com/
Pool sessions plus
Kayak & Canoe Outriggers
Touring Kayak Paddles
PFD's (Life Jackets)
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