Help with installing a fish finder.

i have a wildnerness tarpon kayak. would like to have a fish finder installed. anyone got one for sale and can install it? i'll be willing to pay for any servie fee associated. im from hayward. thanks!

I need to go fishing!

Ive got one for sale in the classifieds that comes with a removable mount, all self contained ready to go. Just mount the included rail and its done.