Northwestern has struggled to score this season, including from the free-throw line.
The Wildcats are ranked 10th in the Big Ten with a .655 team free-throw percentage.
"I've gotten a lot of different emails and suggestions from plumbers and ditch diggers and politicians and everybody else," coach Bill Carmody said.
The Wildcats took Sunday off after Saturday's 15-point win over Purdue at Welsh-Ryan Arena. They will do some shooting today, will work on special situations on Tuesday and Wednesday before beginning preparations for Saturday's game at Iowa.
"You get in the gym and you work at it and make sure you cover yourself [so] there's nothing technically wrong with what you're doing at the foul line like coming off the line or leaning backwards or anything like that," Carmody said. "If you feel pretty good about that after watching yourself on tape it's a confidence thing."
Point guard Dave Sobolewski is making only .579 percent from the stripe, which is puzzling since he's one of the team's better shooters. He missed three straight after the Wildcats cut Michigan's lead to nine in Wednesday's loss.
"Some guys that are bad shooters, I don't expect them to shoot very well," Carmody said. "Guys that are good shooters, you take care of what you take care of and you have to be confident when you step to the line."