Bob-
You need to try to make it up to Dallas area and Shreveport for some regattas next year or over to Ponchartain (LA)-
Another option for "kiddo" wetsuits is a dive shop (even locally in FL) who often have used (some of the big cat dealers have used also) or will rent and powerboat shops that specialize in water skiing/boarding-
Kirt (w/ 2 teenagers- been down in the Keys in March and the water was too cold for one of them then down there w/o a suit!)-