pool noodle help

Please forgive the silly question but why do you need the pool noodle for the transducer? 

Hey Bob.  If you're still wondering, it's for the mounting approach where you
--cut a puck from the noodle (or yoga block, or whatever)
--cut a transducer-shaped hole thru the puck
--glue the puck down inside your hull
when you're out fishing,
--fill the hole with some water
--insert the transducer

There are variations.  Search the forums for more info.

Thanks Fish Elvis!  I have never heard or seen anyone doing that before.  (But then again, I don't spend much time looking in other kayakers hulls!  j/k )
Sounds like a good idea if you are removing the transducer from kayak to another kayak or something.  Other than that, I'm not sure why.
Thanks a lot for pointing me in the right direction though. 

Sports Authority has the large pool noodles (Sunnyvale Store).  I bought a bunch of the smaller diameter ones at Dollar Tree Union City for $1.10 each yesterday and stuffed the inside of Kayak as its life vest.  You can buy every imaginable type of foam, even scraps for a few dollars at Bob's Foam Factory in Fremont.
http://www.bobsfoam.com/

i got two last weekend at the dump, i know savaging is not allowed