We have a one year old fiberglass boat that is not bottom painted. We usually trailer the boat, but plan on keeping it in the water over the weekend several times during the upcoming Spring Catch and Release Striped Bass season on the Susquehanna Flats. Leaving it in the water for the weekend seems to be a more convienent option. I have been told that I may have to be concerned about staining from the water. I have been told that this can happen as quickly as overnight. Should I be concerned? We will be on the Northeast River.