the fish thefts were all internal...a few years ago there was a bit of a fish kill down there, after which the remaining stock grew very quickly to which point a number were then moved to canal pool!
not an easy water, but far from being a hard water,
i used to fish alot of evening on there when its a bit quieter,, off one of the 2 points you used to be able to catch them very close in if you were quiet, beds of bait have worked for me a number of times, but in general your best off finding the fish and fishing for one at a time with small baits and minimal loose feed.
loat count of the number of fish iv had out of here, and would expect a 20 each trip, and i took them to over 30
cracking water and one ill be doing a few shorts sessions on again this year