-The best choice among the players currently on the roster is arguably Kirk Morrison.
-We can use Arthur Moats on passing downs, but his limited coverage skills make him more of a specialist and not a true Sam.
-Scott McKillop also provides potential depth here, but he is probably not starter material.
-Shawne Merriman would be out of position at SLB, and is best suited as a DE in a 4-3. Nick Barnett should probably play weak side linebacker, but I wouldn't be surprised if he made a good fit at SLB as well. Still, that's a last resort type of move.
I must admit, I find our chances of drafting or acquiring a strong side linebacker to be much greater than drafting the mythical OLB that will solve our pass rush woes. I hate to change horses in mid-stream, but I feel we are truly halfway between the 3-4 and the 4-3 as it is, and any direction we go in will be just as difficult as the other. At least the 4-3 gives us the chance of generating pressure up the middle.