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Old 07-15-2014, 04:57 PM   #7
Iceman
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Join Date: Mar 2005
Location: 1-2 miles off the point
Posts: 6,943
These may work, they are for the HDS so buying 2 you don't need???

http://store.navico.com/Products/000-0124-70

Also seems to be a popular solution, google:

"Vacuum caps for fish finder"
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