Swamp Bucket question

I’ve used my swamp bucket to boil shrimp dozens of times. Love it.
Tonight I picked up 7 pounds of live crawfish from Crawfish on the Geaux on Perkins. I used a good bit of liquid crawfish boil. They came out great, and peeled perfectly. But they tasted hardly seasoned at all. Was using liquid boil the wrong choice? What have you used that seasons well in a Swamp Bucket, and how much of it?