Transducer gooped inside hull of Tarpon 100 a good idea?

Hello guys. have read quite a few articles and I'm finally ready to install a Lowrance hook 4x downscan on my tarpon 100 kayak. Thing is, a lot of people say do not goop the transducer inside hull because you will lose sensitivity, lose temp, and get inaccurate readings.  Other people say its the ony way to do it that sound will go thru plastic ok and give accurate readings. I would really appreciate you guys input. How did you guys install your fish finders? -what worked and what totally didn't work?  Thanks a lot in advance for your replies.

http://www.norcalkayakanglers.com/index.php?topic=62398.msg701208#msg701208

I have done it that way and it worked fine, i have also used a lil part of a pool noodle and made a little bath to hold it in that also works well

 

  I've done both ways, my "Gooping" experience was not good.  I use a water bath now.  When using the Goop method I used some crap called Lexel.  Was a clear goop substance.  I made sure when I was laying the goop bed down to not overlap and trap air bubbles, the goop bed was air pocket free.
  Didn't matter. 
  Bottom line is you cannot have any air pockets (Bubbles) below the transducer.  By using a water bath method, (Sitting the transducer in water) that will pretty much guarantee that no air will be below the transducer.  (Just don't have any leaks in the containment and remember to add water before you launch!)
  Here's the problem as I know it from my experience.  Cavitation within the "Goop" bed will cause air pockets to form.  The ultra-sonic pulsed do generate heat, that heat, can boil the "Goop" glue causing air pockets.
  After my "Lexel install failed, I looked at the impression my transducer had made in the cured Lexel (Like a mold of the transducer bottom) and it was chocked full of little craters where bottom of the transducer was resting.  Should have been  a flat surface, but it wasn't.  Air pockets formed after cavitation happened and caused all the little craters.
  Yes, others have had some success with "Clueing" the transducer in, I call  it lucky.  Why take that chance.  Put the darn thing in water and fogetabutit!

Thank you guys.

I've been wondering the same thing. I also have a tarpon 100 and I the Scotty transducer arm mounted right now. Being submerged directly into the water of course reads great. What I don't like is that it causes drag on the right side of my kayak which have to constantly correct for. After reading this I will do the water bath install tomorrow so it is all ready to go this weekend.

Put me in the camp of those who the goop method failed on. I recently was having so many issues and I realized that while it felt held in pretty well to the kayak it really had grown air pockets in it. I have since gone with the Duct seal water bath method and have had no issues since.