Strugeon Bait

You see a lot of postings about Sturgeon bait - Squid, Smelt, Sandshrimp etc. but what to use when. When the water is warm 60+ there are these crabs that will eat the guts out of Smelt so during summer I avoid Smelt. Usually it is trial and error recently I was fishing with Squid and Shrimp the bite was slow so I put on an Anchovie and 1 hour later we had 3 keepers in the boat. I have come to realize I will put a different bait on each rod and see what they like. One thing to keep in mind, from the fishery to St. Helens the Columbia is one big clam bed so try adding Clam scent from May - Sept when the clams are active.