I like Todd Overton's numbers. I think they're very consistent with mine--which were based on the assumption of a fairly diverse size structure for LMB populations. The ponds that I've stocked were probably a little heavy on the 10-14 inch fish compared with some of your ponds. I liked the part about 5 inch wipers being safe around 4-6 inch LMB.

I'm not sure who would win that battle.
The garden hose, if coming directly from a well should be run through a Wal-Mart sweeper nozzle ($2) and through three or four cinder blocks to break up well gasses and inject a little oxygen. This cool, well-oxygenated water serves as a refuge on a nasty hot day.