Transducer Mount Question

In process of mounting first FF in my P15 w/ in-hull transducer.  Looking at the past rigging posts I see that some folks mount the transducer in the center of the hull and some mount them more towards the side on the slight, flat ridge in the hull. I'd like to go with the side mount so I can still easily stow the cart in the front hatch.

Anybody run into problems or have any concerns with this mount location?  I'm assuming it works just as well as the center mount location given correct installation (no air bubbles, flat, etc.). Plan to rig it so it is removable using the noodle/foam base set-up.

Thanks much - John

As long as the transducer is facing downwards and the hull remain's in contact with the water it can be located a little off center.  Placing it on centerline guarantee's that the hull will be in the water (Deepest part of hull)

I have heard that Lexel is a good way to glue the transducer to the inside of the hull.  Seems it bends with the plastic better than epoxy, which apparently can crack.  Any ideas on this?  Also, interior vs exterior mounting; seems less likely to get scraped off on barnacles if it is inside, no?  And where on the interior is best....we thought in front of the scupper would be good and less likely to get knocked off.

thanks

Pete

Personally, I'd stick with Marine Goop  I've used Goop on several installations, and it worked well, although after some time it can develop minute bubbles which will make the transducer have erratic readings.  But with Goop you can easily remove it with a putty knife and it's easier still if you use a hair dryer to soften the Goop.  I once tried Lexal after the guy at Outback told me he uses it to install closed cell, foam bulkheads in his SIK kayaks.  I thought maybe the fact that it was more fluid would lessen the chance of trapping any air during the installation.  But it really didn't work well and I tore it out pretty quickly and went back to Goop.  But now most are using the foam cut outs to install the transducers.  That way you really don't have to worry about bubbles since the medium between the hull and transducer is water.

Definitely avoid Epoxy, it won't adhere well to polyethylene and probably will start to cleave free once your hull flexes some.

If you have a newer P15, you can exchange your transducer for a thru-hull transucer if it's a Humminbird.  Then you can mount it in the depression that OK made in the rear, starboard scupper hole.  I read that Sean said it has a stronger signal when it doesn't have to shoot through the hull.

M- its an older P15 w/o the scupper-mount option.

Where can you find the mini-cell foam?

Thanks guys - John

My original boat was a Prowler 15,
For the best install (IMO) I installed a center hatch in front of the seat and than mounted the trans. under the seat so as not to get any air under it, also out of the way for items stowed in the front hatch. This allowed me to also store more items in the catch bag of the hatch. Used silicone (scuff hull with coarse sandpaper) to attach the trans. and it held for 3 years even when transporting on roof rack upsidedown and could be peeled out if I changed units.
Eric
P.S.
Brian G. now has this boat and may be able to post pic's?