humminbird

i installed my GPS Huminbird 688DI on my Speedster, but am unable to get a signal. I had it hooked up and in place (before installation) and it worked, showed me on land. a week later, installed it....doesnt work. took it off mount, tried holding in air hooked up, doesnt work. no signal. I...

good day, due to the angle on the back of my Speedster 150, i decided to go with a thru-Hull transducer (link below) I was just curious if anyone has installed this product, and if they were able to mount it without playing with the leveling block in any fashion. I will be looking at it...