OK T13 transducer scupper hole mount

Anybody using the the transducer mounting area that is molded in the front scupper hole on the T13? Pros and cons on using this feature. If anybody has, pics would be nice as I have found pretty much no info on installing it in the molded scupper or what is needed. I have a few rough ideas but thought I'd do a shout out first. Thanks in advance for any info!

I have a Humminbird transducer installed in the scupper hole of my 13' Ocean Kayak Trident.  The materials included with the sonar unit explained that to get a kayak scupper hole transducer, you should send the unused original transducer to Humminbird, and they would exchange it for a scupper hole transducer.  I did that, and installed the scupper hole transducer in my T13.  The transducer works well, and is mostly protected by the pocket.  It sticks down slightly below the bottom of the kayak, so I worry about hitting it on rocks.  When landing on a rocky beach, or when grinding over a gravel bar on a river, I shift my weight to the other side of the kayak in an effort to avoid banging the transducer on rocks.

But my fish finder is a couple of years old.  Humminbird may have changed the exchange arrangements, or it may have produced a lower profile transducer.  I'd ask Humminbird what scupper hole transducer is designed to work with the model of fish finder which you want to purchase, and how you can obtain that transducer.

I did the same thing with my OK Trident 13 about a year ago...I installed a cheap Piranha max 190 and they swapped it out no questions asked. I noticed a much improved signal return with it mounted this way and the transducer was well protected in the scupper recess.

The biggest Con to this handy ducer mount is that it cuts your drainage in half. Those holes under your tush don't flush much water. I would not recommend this mount if youplan on doing a  lot of surf launches. Lakes or rivers you would be fine.

Drainage was my concern. Thank you all for the feedback. Pics of any custom setups? I have found a couple of manufactured mounts, but they appear to limit the drainage as one would suspect, also expensive

It would probably help to let ya" all know what I'm using...... I just purchased drools T13 Prowler, it currently has a Humminbird 170 FF on it but I will probably eventually put a Cuda 350 on it. The Cuda 350 is simple, has GPS, with water temp. with NAV......and I already know how to use it. I stole mine off my PB for my Outback...speaking of......anybody want or know somebody looking for a smaller/older Glasstron 14' PB for $500??? its in my way

I want to say my transducer is backwards but how I read my instructions its facing the right direction. I left the spacer off to help drainage.

I want to say my transducer is backwards but how I read my instructions its facing the right direction. I left the spacer off to help drainage.

I can"t find the "like" button

Hope it helps.my yak is upside down on my pickup and I got to looking at it and it looks backwards but who knows I bet I'm wrong.

You can improve the drainage by cutting a plastic washer from a cutting board, cutting out a 30-45 degree wedge and mounting under the transducer nut.

Here is how to make the washer:
https://dl.dropboxusercontent.com/u/54098312/kayak/FF.GPS/transducer.html