�After some plumbing I tried pulling the float and lead through the margins which looked like they had a shallow layer or silt on top of gravel. The feeling matched what I had felt on the tops of he bars, really profound tremors as the lead bounced over the gravel. However, the lead was out of sight under the silt, I could not see it under the rod tip in a foot of water. So, never assume just because you can feel gravel that there is not a layer of sediment on top of it. Check what it's like in the edge before deciding on what�s out there.� GRAVEL - very light green and excellent on clean gravel bottoms, perfect for gravel pits. This one can be excellent in one part of the swim and looking like a laser beam in another. On clean gravel it's great but over silt or weed it stands out li