Don't limit the Hardgill solely to edges.
The SS bait is very slow falling and easily worked over brush piles, emergent weeds, laydowns, etc. I typically use a fast-creep-rip over visible cover. End of the cast, I'll crank fast to get it going up to the cover, slow down and creep over the top of the cover and then when approaching the outside edge give it a rip and kill it. If it doesn't get crushed at that point, I'll start the creep again paying attention to any followers that may have started tracking the bait.
Followers are a whole other story. You're on your own there. LOL