I have 2 level 4's that cannot do shoot thru's. We are mid way thru the season. I've tried a block under the bar that they stand on and then jump up and shoot thru. Even when I spot them it takes them forever to get their foot thru. They just keep doing the same thing over and over. They cast pull their leg and then pull it back. They both take their knee to the side no matter how many times I tell them it has to come to their chest. Any suggestions would be very helpful. Any other drills that I can have them do?