The HELIX 5 DI comes stock with the XNT 9 DI T ...

The trolling motor puck version of that same xducer is the XTM 9 DI 25 T ...same beams angles - different housing shaped to fit a trolling motor with a hose clamp ... As Bob mentioned ...it has internal shielding for possible RFI (you may or may not have RFI issues) ...
Humminbird | XTM 9 DI 25 T


The AD XTM 9 adapter will mount the stock XNT 9 DI T xducer to the TM ... But it's not as sturdy a Setup as the puck exchange ...
Humminbird | AD XTM 9


Rickie