Installing fishfinder transducer (marine goop) HELP!

To aide the application of water, I picked up a plastic syringe from the farm store to use. 
This makes adding water to the puck hole super simple.  I store the syringe in the dry bag that houses my battery so it's always with the fish finder.

+1, Very handy!

To aide the application of water, I picked up a plastic syringe from the farm store to use. 
This makes adding water to the puck hole super simple.  I store the syringe in the dry bag that houses my battery so it's always with the fish finder.

That's brilliant, why the hell didn't I think about that? I usually slosh half my water bottle trying to fill the stupid thing

I have a 2-3" length of small diameter clear tubing that I push onto the tip to add reach.  I can pop this tube off and store it next to the plunger handle inside the syringe.

Romanian Redneck, I should probably mention that I too use the foam puck and water method now.  I used to simply goop the 'ducer down and I really liked that method because it was really easy - just glue it down and you don't ever have to worry about messing with it when you're getting on/off the water.  Now, since I swap my sounder between two kayaks, it makes more sense to use the foam puck method.  Give the plain goop method a try and see if you like it.  You can always change your transducer mounting method later - it isn't permanent.  I'm probably going to experiment with the plumbers putty method next. 

So this might be a stupid question, but which part of the transducer exactly needs to be "bubble free"?
The bottom? I always thought it was the back of the transducer that has the black shiny plastic piece.
When my transducer is all the way down in the foam mold, the black shiny plastic front still sticks out a bit. Is there a concern for faulty readings with this piece not submerged in goop or water? (see picture below)

The bottom surface is the surface you want to be free of bubbles.  So the more of the bottom half of the transducer you can get covered and not exposed to air, the better your readings should be(which is why the foam puck and water method is so nice -  your transducer is sitting in a pool of water.  However, you can get readings just by holding against the hull, just ask Fishesfromtupperware.

An important point I forgot to mention is that when you're gooping down your transducer, usually what causes the transducer to want to lean to one side is that the chord is positioned in such a way that pulls it over or makes it lean to one side.  So when you tape down your transducer, make sure you also secure the chord in a way where it isn't pulling the transducer one way or the other. 

I too have used the foam and water method since I first installed my FF. I have a piece of pool noodle wedged between the top of the puck and the inside of the yak to keep it in place. The only problem I have had was forgetting to add the water before launching. It's not something you can do very easily once you are on the water!

To aide the application of water, I picked up a plastic syringe from the farm store to use. 
This makes adding water to the puck hole super simple.  I store the syringe in the dry bag that houses my battery so it's always with the fish finder.

+1, Very handy!

My transducer was mounted pretty far from front hatch on my prowler this is what I used from the dollar store for extra reach.

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I did the plumbers putty method on mine.  Will test this morning (yeah, cant sleep) in the ocean and see how it does

The method i used was as follows.

I bought a locking lid plastic box and cut the bottom out of it. I then mounted the transducer bracket onto the box. Next i used marine goop to glue the box down. I made a slit in the lid for the wire and the. Filled the box with water. Closed and locked the lid and put a little plumbers putty around the wire to seal it.... Now i have my water so no air bubbles and no worry of spilling the water or forgeting to fill it up.

The method i used was as follows.

I bought a locking lid plastic box and cut the bottom out of it. I then mounted the transducer bracket onto the box. Next i used marine goop to glue the box down. I made a slit in the lid for the wire and the. Filled the box with water. Closed and locked the lid and put a little plumbers putty around the wire to seal it.... Now i have my water so no air bubbles and no worry of spilling the water or forgeting to fill it up.

Sounds interesting. Got a picture?

+1 on a picture.

I tested my plumber's putty transducer mount yesterday.  Will post results when I pull the screenshots off the FF. 

The method i used was as follows.

I bought a locking lid plastic box and cut the bottom out of it. I then mounted the transducer bracket onto the box. Next i used marine goop to glue the box down. I made a slit in the lid for the wire and the. Filled the box with water. Closed and locked the lid and put a little plumbers putty around the wire to seal it.... Now i have my water so no air bubbles and no worry of spilling the water or forgeting to fill it up.

Sounds interesting. Got a picture?

I like it...seems that if you can get a nice water tight seal on the bottom this would work pretty darn good.  I'd also like to see a pic if you got one.

People call it a "wet mount".  Here's a pretty extensive explanation and discussion on it from SoCal:

http://www.bigwatersedge.com/bwevb/showthread.php?t=6508

I've considered this type of mount before.  It seems like it should work really well.