Welcome! I have done several floats on the upper Potomac between Brunswick and Point of Rocks over the last 4 years. Mainly floating closer to the VA side, than MD. Although the conditions are amazing for smallies and what used to be really good numbers and decent size, just isn't there anymore. With the rain/flooding over the last couple years, the spawns haven't been good at all and has killed that stretch. I did my last float there this past weekend, really with perfect conditions of a rising river in the Spring, and only managed 5 dinks. Nothing over 10". I'd go Shenandoah River instead. Just my experience.