Hi Dave, went up the lake this evening, to test something on the tug.
I had already downloaded "WiFi Analyzer" to my phone and checked around the lake, no large wifi signals found that could have caused problems.
Steve did have a small problem with his tug, in that he lost steering at the lower end in the same spot, by the reeds...but mine was flawless again.......don't know what to suggest up there now.