That is what I need!
Renting puts too much pressure to 'get it done', especially for a job I have never done before, have sketchy information about and where weather can play a huge part of the puzzle. I'd rather it take me 7 days spread out over two months working at my own pace than two days of intensive work where each day ends with five Vicodin. I do have a few neighbors in the commercial heavy construction business that are able to rent things for 10% of what I'd as a stupid consumer has to pay but, I am not keen on taking advantage of people that are not best friends. A bottle of Makers Mark is just not an adequate thank you to a person you 'just know' and imposed on.
My concern about small pumps is pine cones. Can a 2" pump chew them up and spit them out? Will they clog the suction hose? Small sticks and leaf clumps? I could handle having a big bucket and if the tip of the suction pipe clogged with debris, pull it off and drop it in the bucket, assuming that is feasible.
I know there is no rock (at worse, sand like silt, tons of fools gold too!), except at the very bottom and a "U" shaped bar at the end of the suction hose would keel me away from 'rock bottom'. I've tried digging with a regular spade and it is near impenetrable except with a BH.
A $600 pump and $300 worth of hose is acceptable.
Draining the lake is not going to happen, probably. One neighbor that also lives on the lake was to expand it by excavating out about one acre down 15', but they do not have the money ($50K). Talk was if/when they do that, as part of the job, they'd dredge the entire (bulldoze actually) lake, using all the dirt and crap from the bottom to fill in a field down near the river. It floods every year up to three feet deep, and the rough calculation has it this fill would bring the field up about four feet. When we get severe weather, it is such that the entire lake could be filled in just two days of a tropical downpour, which we get a few times a year.
Keep the thoughts coming, all are greatly appreciated. I am performing an appendectomy with a butter knife and a bottle of Gorilla Glue here.