I am buying a house with a backyard that is on a small private lake, really more of a large pond as there are no tides or motor boats.

it is currently overgrown but once I clear it I am thinking about putting down pebbles a few feet along the edge of the lake in order to prevent (or slow) The growth of weeds and having to mow right next to the water.

Any issues with this or things I need to consider?