After using this for almost a week now I've improved my aim without it. It may be a hack but at the same time it helps me get a feel for my accuracy and awareness of my surroundings, especially in the water (boarders and floating kegs). Not only have I improved my aim but I was able to coach others with that tool. Thanks for putting so much effort into it. Best tool I have ever used.
All in all, this tool is a great hack and simultaneously a great coach.
Keep up the good work!