the KEY to drifting your shrimp over the rocks in current is to keep your rod tip high, while keeping in contact with your bait. if it feels like its hitting the rocks lift your rod tip a little more to keep right above the rock. might be difficult at first, but with more practice you'll get better at it. be prepared because you will get snagged, it just part of the game. as always, thanks for watching and God bless!