Make your own...
Much better than a Hobie tank - switches don't corrode, A LOT cheaper (well under $100 for mine), no special size battery. It can be made as a "dragger" or through-the-scupper type, can be made so it won't self drain when your battery dies, etc., etc.
Through-the-scupper type may take a little more experimentation, but then you'll always be able to trouble shoot it yourself.
My "Faux-bee"
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