Also... You may think about moving the xducer back toward the prop "just a little bit"...

Looks like you have 3 or 4 inches of room between the back of the xducer and the prop to play with...

If the sonar beam crystal element is in the very front tip of the xducer... The lowest point on the trollin motor skeg may be sticking down far enough to actually be in the front edge of the cone shaped sonar beam...

Rickie