I would like to build a target onto my chronograph for something to aim at. I have been thinking about the best way to do this. One idea that I have it to install a thin metal piece (1/2" x 12") onto the top of the tripod mounted right below the chrono. From this metal piece I would rig up a target up to it. This would put the target right in between the screens. Would this cause any problems with readings? Or any other problems that I'm not thinking of. Ideally I'd like a target in front of the chrono but it is more difficult to stably mount a target to. So I thought about trying this instead. Thanks.