Shaun.
MASA (Monduran ANglers Stocking Assoc) uses about 3-4 boats with 150 ltr eskys and O2 infusers to take about 5000 at a time to various locations around the lake that we think are as safe as possible. Generally around rockwalls, with lots of trees and protection. Not sure if its 'scientifically perfect' but it seems to work OK. We do plenty of runs around the lake to different areas to spread them out.
Cheers Steve