If Minnkota would add in a speed specific programmed 360 turn in their Terrova, you could do the same thing from the bow with SI, without spending 2K. I dont see that happening though, as it would cut sales into the 360/
As it is now, the terrova is just too fast for 360 scanning, but in essence, it could do the same thing if you could match the rotation speed to the rotation speed of the 360 transducer.. You wouldnt have a round viewing screen, but I dont see that as a problem that couldnt be overcome with experience reading the screen