What i do in fast creeks is tie some weight at the bottom of your line and then tie the hook couple of inches above your weight.
That way if you snag on a rock or anything like that, you`ll only loose your weight.
You constantly have to keep your finger on the line so you can feel the fish bites, the only problem is when your weight is bouncing at the bottom sometimes it feels like a fish nibbling on your bait.
Good luck.
What are u fishing for at grand at this time of the year??
I dont remember last time i cought a fish around Kitchener/waterloo area