I've tried bait atttractors, chum without any real sucess. Ive tied old carcasses to my set poles, tried mushed herring in citris fruit bags, even tried punching holes in oily dog food cans and tieing them up to a rope and sinking them upstream of my blind. I even tried making some homeaid flasher dodgers and setiing them unbaited about a foot above and 2 feet infront of my bait. nothings worked for me , they are either there and I catch them or they arent and I dont. But thats all river fishing under the ice. Not to sure about lakes, I would fear up here it would attract too many lake trout if I set up sets with chum. And for anyone reading, yes I removed all my trash, not a big fan of polluting.