We've got a customer who wants his back yard fescued. H has a lake back there to. it has been graded so that the yard has about a 8+ degree approach to the water. I tried telling him we could build a wall and level of the yard but he does not want that, plus i think the ground is too soft. he just wants the grass to go right into the water. i think its gonna make a mess to maintain later on. what are some other options?