One important point I will offer ...

The HB needs accurate digital depth data from the 2d piezo in the xducer ... because some of the algorithms used in SI processing uses that digital depth data ...

So turning the SI xducer at any angle other than the stock installation may create weird issues created by the 2d piezo not pointing straight down ...

This challenge can be alleviated by using the 9 M SIDB Y cable and a secondary 2d xducer to get accurate digital depth data from the secondary 2d xducer ...

https://humminbird.johnsonoutdoors.c...splitter-cable

Rickie