Welcome aboard. Great that you have had the boat in your family for three generations.
This forum is a good place to read some good and not so good advice! Also forums at
www.woodenboat.com and
www.woodyboater.com and believe it or not,
www.fiberglassics.comThere are no "places" to go to purchase a new keel or planking. You will have to have them custom made by someone who knows what they are doing or do it yourself.
The leaking may be as simple as the caulking under the keelson (the outer keel) being dried up and no linger functioning. Someplace in this forum there is a long explanation of how to remove the existing keelson and clean up under it and recaulk and either reattach the old keelson or make a new one.
Brochures of the various "Thompson" boat firms have been scanned and you can purchase them on CD-ROM or flash drive at
www.wcha.org and it is a great resource.
Go to antique and classic boat events in your area and also events of the Outboard Motor Club (
www.aomci.org) and start to get to know others with similar old boats. These are the best resources.
www.acbs.org has chapters all over North America. There are other non-ACBS classic boating groups as well.
Hope this helps and keep asking question. Pictures are appreciated!
Mr. Andreas Jordahl Rhude
President
Thompson Antique & Classic Boat Rally, Inc.
a non-profit corporation