Right now, as of this weekend anyway, there are tons of shad in the backs of any creeks/pockets on West Point. As the water gets colder, they will move out into the main creek and river channels. This pattern is usually true on most lakes in the South.
It also can depend on what type and size of shad your looking for.
As of monday. All the bait of any size was below 20' depth range on hartwell. There was some very small baits in the very shallow backs of creeks. Im talking crappie minnow size. Its been that way for several weeks now. It was that way on clarkeshill 3 weeks ago.
Makes bait very hard to catch.
When the water gets cold enough. They will return to the shallows were it will be warmer than the main lake.
The creeks are good. Could be anywhere from the mouth to the very back.
Bridge pilings regularly produce a few.
Concrete boat ramps do to.
At night any dock lite. Or you can put one out and wait a bit. Turn lite off and throw net. Its pretty easy if you have side scan.
You do it with freshwater fish, and is even done with aquarium fish to some extent. Catching the fish in a net, removing it from the tank, etc... stresses the fish which increases its cellular activity in the body which causes it to use energy, give off ammonia into the tank, and increase the sodium concentration in the dishes body. By increasing the salinity of the tank water you reduce then concentration variance of sodium (salt) between the fish and the water in the tank and reduce the amount of energy the fish has to use to try to achieve balance by expelling water, which is typically a lot in freshwater fish since they have more salt in them than in the water. You more importantly have to pump the tank with oxygen so the cells can produce energy through aerobic respiration, which uses oxygen. Oxygen is the main need to keep them alive, but salt helps reduce the energy usage of the fish while they are stressed by preventing them from have to spend extra energy regulating their salt to water concentration.