You really can't call yourself a painter of Maine land and seascapes if you can't paint water.
This is something I've been working on for twenty years, and I still have lots of room for improvement. For me, the most difficult to paint is a fast flowing river or stream. (None of those in my body of work!) But I'm working on it. Tonite I practiced on watercolor paper. I plan to keep practicing until I get it right. Soon you'll see a painting of one of Maine's fast flowing rivers!