Quote Originally Posted by speckfinder View Post
They do make a HDI ducer that has down imaging and 2d sonar. I know they work with the touch units but not sure if they work with a gen 1 or 2

I have one on my TM. It connects directly to unit where 2d ducer connects.
It works with the Touch because it has built in Structure Scan, the Gen 1 & 2 don't.