I'm looking to control the rudder (only) on a model rocket launched glider. A kids project. (Yeah, sure! <grin>) Low weight is a huge consideration consideration. I'm wondering if I could use a LASER pointer with a sighting device (rifle scope?) to transmit a simple control signal to an IR receptor hanging below the glider (always in ground view). The signal (on, off; or modulated) would trigger muscle wire (solenoid) to the rudder, left and right. This way the major weight component would be the battery for the muscle wire. One question I have is whether a receptor sensitive to a LASER pointer beam is an off-the-shelf component? Otherwise, is this solution off base? I can't find it having been tried in the model rocketry or RC arena. Or is there a simpler or less expensive solution I'm missing? Tks all.