What this really boils down to is for the last 200+ years (1787 is when the Northwest Ordiance was adopted for the Wisconsin territory), Wisconsin beneficiaries have enjoyed the freedom and simple regulations that if you can legally access the water, your travels while remaining in water are generally unrestricted. The state constitution recognized and adopted the Public Trust Doctrine labeling all water in the state as "navigable waters are common highways and forever free".
Unfortunately, the constitution at creation didn't provide a multi-page essay and explanation to go along with it defining every term and application and so over the course of those 200 years, lawsuits have been filed and laws passed by the state legislature to further define this article in the constitution. For the most part, the result of all of these lawsuits/laws has been in favor in keeping with the "spirit of the original intent" by simply determining that the beneficiaries of this state have freedom to use the water as a public resource.
This lawsuit I will admit I now think has very little actual DIRECT impact. The percentage of beneficiaries of this state that have participated in recreational activities on waterbodies in locations above the OHWM is probably extremely small. Springtime backwater canoeing and fishing come to mind along with a few rare occasions of fall waterfowl hunting and wintertime ice fishing.
The reality is that the OHWM does and still should cover a vast amount of locations and traditional use. I just can foresee where this could potentially lead to if this lawsuit isn't challenged and overruled. This particular case involves events that happened in a location where I would have considered the presence of the public on the water to be well below the OHWM. If the case would have occurred 2 or 3 years prior, there would have been water at this location likely the entire year. So will this lead to more challenges of defining the OHWM differently than it is now? The ruling from the 1914 supreme court case still leaves the definition pretty vague.