You may be on to something… OpenBATS… the real issue, I believe, is going to be to distribute the tethering system so that they aren’t flying in to each other, but you don’t create a great deal of wind resistance from where you hang.
Maybe you could set up a super thin carbon fiber ‘V’ wing which each bat cluster is tethered to… you could hang directly from the wing like a hangglider, or even just mount it to your back, so wind resistance from the lines is minimal. When you land the V hangs from your back, and the bats all perch upon it while you walk around preparing to relaunch or whatever. To perform a high altitude dive, you might also reel them in to their perches.
To have enough bats without them interfering with each other, there may need to be 2 elevations of bats… so 1 wing staggered above the other… would take some testing to figure out how close the 2 levels could be before they cause wind interference with one another.
Because at higher speeds the distance needed to not cause wind interference is less, the top level of bats could be reeled in at higher speeds for more aerodynamic performance.
In order to assure the pilots vision remains clear of bug-debris, the innermost two bats should be on a longer lead tether, allowing them to fly ahead and catch the bugs which would hit the pilot. By placing the tethers on wing-long track (super narrow circle), you could have the lead feeder bats cycle during your flight, giving them rest/feeding time and allowing you to fly longer. (Bats can rest and fly at the same time right? If not, maybe it would be worth training something with a larger wing span)
Where do I sign up for the crowdfunding?!