That sounds like a nice set-up. I like the idea of the wireless Tacktick system, mainly because it seems like it would be so much easier to install. But you made an additional good point I hadn't considered -- i.e. that malfunctions in the typical systems tend to trace to the hard wiring.
We have a functional knot meter and depth sounder (Datamarine), but no windspeed/direction indicator. Which I take it is more-or-less where you were with the malfunctioning Raymarine wind unit. So I am wondering, why did you not just get the stand-alone Tacktick wind instrumentation? Was it simply because you had always wanted the ENTIRE Tacktick system, or are there other considerations?
I ask because I have been contemplating the stand-alone Tacktick wind unit to complement our speed and depth units. Would I be missing out on some functionality?
P.S. Clever thinking on the depth sounder wiring!