Need some help, can I install the transducer in the front of my fiberglass boat under the front deck?  Will it work properly or should I mount it on the trolling motor? thanks

It has to be in contact with the water to work or the bottom side of the Xducer epoxied to a glass hull. They will not shot through air. Even airbubles in the epoxy mounting one down can cause problems. If you're talking about glueing it to the inside of the hull and shooting through the hull like the do in the rear, most likely it will not work doing that either. Most bass boats have wood layered between the fiberglass in that area and it will not shoot throught the wood. If you want to see if it will work, get some clay and build you a dam around the area you're think of placing the Xducer, place the xducer in it use some type of weight or something to hold it in place and fill it with water. It will need to be in an area that will let it point straight down when you are in the bow seat. If it works to your satisfaction, epoxy it in.

As W2S said, the transducer has to be epoxied to the hull in a spot where the hull will be underwater.  I don't know of many fiberglass bassboats that have access to the bottom of the hull at the spot you'd need to mount that without cutting an access hole and even then it may all be for naught.