flotation tanks for a sabot

[sabot sailer]

Hi

I already posted this question under sailing, but wasn't sure if it belonged here more.

I have an old fibreglass sabot with a single flotation tank built into the bow hull. The kids capsized it and it started to sink, so I'm trying to figure out how to add flotation.

I know that portable flotation tanks can be bought for use with an optimist, but haven't been able to find anything specifically for a sabot.

Does any one have any suggestions?

thanks