A number of years ago I cath'ed a bunch of LMB to get females for a pond. I ran closer to 60% male, 40% female in the group of LMB I had to work with......
Couple of things that has to be done.
1) You have to cath the fish at the right time of the year - pre-spawn. After late June, you are typically done until next year.
2) The fish have to be large enough to be of spawning size - it doesn't work well on 12" or smaller fish, and I'd rather try it on 14" or larger fish.
3) Unless the fish are pellet trained, transferring those larger fish to a pond and expecting them to figure out where to go to get their food is an iffy thing.if you expect those fish to keep growing quickly.
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