3/8"-16 Thread

You're almost done.  You've chosen the 3/8"-16 thread series for the post on your rod holder.  This is a smaller thread, designed for the lighter duty fishing.  It is still capable of landing very large fish, but the smaller game fish is where this thread shines.  This is the best choice for your Spider-Rigging techniques, while trolling for Crappie.  Now, just choose which post height you think will work best.