I have a suggestion due to the issues raised so far. Call Mike Otto for a consult (http://www.ottosdirtservice.com , mikeotto@ottosdirtservice.com 1-800-882-3478 ). There are things you have not even thought about. Making larger water bodies /lakes is a once in 4 generations event. That is how far out you should be thinking - creatively - about what you want. Mike can also look over bids to help you be sure they are what you think. BTW Mike and Bob wrote the book.