Pro is more geared to GIS (Geographic Information System) professionals. The home user looking to check out a new fishing spot would not be able to fully utilize the capabilities, nor would they need them. You don't notice any differences because you're probably not analyzing or processing large chunks of data over imagery. If you don't make maps for a living, and have never heard the acronyms GIS & ESRI, you definitely don't need Pro.
Google Earth tip: On the toolbar in GE there is a "Show historical imagery" tool, it's a clock w/ a green arrow around it. Hit the button and you get a slider bar that allows the user to look at imagery, sometimes dating back many years, although that's typically pretty shotty. Anyway, this capability should allow you to better analyze your area of interest over the course of a year. You'll find the best access points when the foliage is the sparsest.