Lowrance TI2 12 inch graph

I see that they sell with the “foot long” transducer. Does Lowrance make a transducer for the trolling motor that is “much smaller” that gives you the same data as the large transducer?

No, but it does fit.

Russel Marine makes a trolling motor mount for it, had one on my Xi5.

The only shorter option is a HDI, which gives DI and 2d only, no SI. If you were to buy a ghost trolling motor, they make a 3 in 1 that fits it and is a bit shorter.