If you have a sandy bottom that has been compromised with silt and leaves by stirring up the water there is a way to clean it. I use this method at my house, not because of marine construction but due to the fact that my bay is now a no wake zone and I don'r get the wave action to clean the sandy bottom and the west wind blows leaves and silt my way.
I have a roof rake with that extends to around 25'
I start my boat and make sure the drive is trimmed straight back which starts a good currant Then, starting at the boat, I walk along the shore
stirring up the bottom with the rake and it cleans it right down to the sand.
Not to play devils advocate, but you could tie your boat in such a way as to direct all that material right back at your neighbor
