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 Real good idea. Some way of "dumping" stuff seems like a great 
option. 
I was always thinking along the lines of a high pressure piston pump like 
what would be used to change the VBT at depth, but just a bilge pump-to-snorkel 
would mostly do the same thing for a lot less hassle. 
Then again..... 
HP air from a scuba tank could dump a little VBT.  
Could you put a hard tank ( little one) to receive the bilge water, then 
valve it off, and then blow it out through the snorkel valve using the HP 
air.? 
I'll make a little note for my file, the hand pump to snorkel is pretty 
damn simple and sounds very useful. 
Thanks for the tip. Frank D. 
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