Depth Finder

[Turk Lake]

When I purchased my pontoon it had a depth finder that went to O'.  It is a 2" transom mount.  It got damaged and I am having trouble finding a replacement that goes that shallow.  Many seem to start at 3'.  Any suggestions?

 

[Link]

On my Garmin there is a setting that can offset the depth so that it takes into account the depth of the boat displacement.  Doing that would bring your net down to 0.