Most catfisherman want them fresh (I know because I travel the country fishing for BC).
When you were dropping pond have a few big holding tanks with a brine ice water mix and seine as alive and throw in. They will last that way for a significant time if water is kept full of ice (and slime drained). Just put an ad on craigslist, the various facebook pages in your area, and such. Let them come pick up. Shad aren't the desired fish species for monster blues but do work well. The big ones (10inches plus) go for about a buck a piece, it kept cold.
If anybody would build a pond to keep skipjack herrings and have them spawn, they would be millionaires. They usually go for 6-8 dollars a piece.
