We split and loosen the shells along the back.
We like cajun seasoning and lots of folks here use Old Bay.
A couple hrs marinade in Zesty Italian dressing works pretty well.
Another approach is the Nawlins' approach to bbq shrimp.
We cook either method in shallow sheet pans and use French/Ital. bread to sop up with.
Chef Folse BBQ Shrimp Stuart taught us a method that works well with mesquite.
Start the smoke rolling and let the funky yellow smoke burn off,before you put shrimp in.
Like above,it could take 15-30 mins and a little experimenting.
Albertsons,down here ,has 2 lb bags of 8-12 count and they work well.