Yes, I could put a probe(or?) into the lake. Rather than using the dock, which is not in best of shape, I would probably do whatever fits best once I have an idea of what’s available. The lake is small and private( 1/2x1/4 mile), I.e. owned by all the surrounding residents and as an association we don’t allow power boats, etc. but I can put something in the lake that is non-contaminating.