The Berkley worms are perhaps the most bouyant of the store-bought worms and driftfish well with or without a bobber above them. I certainly wouldn't toothpick a birdy as it's gonna wind your leader in no time at all. You can fish a corkie above it and should haven't to toothpick it. Remember that your best drift presentation is down and across and once you're into that position (you should be casting straight across and increasing lead / freespooling to achieve the correct drift) the water's push will keep your bobber down with the worm.

Personally, I had a compnay back east pour me a monster load of worms a few years back for drifting and have good luck with them. They are a little more durable than the Berkley's with more of a bubblegum shade than the cerise color the Berkley's have. They are also far more bouyant than anything I have found locally.

I've played around with other colors and HAVE NOT had as much success myself, but I know other fellas that do use colors such as the merthiloate and do very well with them.

Keep at it and you'll become a worm addict like myself!