I am still tweaking the design and, after test flights, also have opted for one downwards facing and one rearwards. I was finding two down helped visibility but not so much orientation, as hard to determine out of sync flashes as the distance increases. With one down and one rear, I could tell if the drone was generally facing away or towards me, and (using the red of the rear) was able to better determine intensity to give a small element of understanding re degree of orientation. For the rear facing design, I have moved away from being close to the body as other designs, to counter balance the other side and, in my mind, it provides better visuals due to less obscuration by the body when yaw rotating.
I have not managed to get a strong enough and light enough design to fully hang under the prop area but as others have said, the hook and loop solution is strong enough.
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Sounds like a good plan. Look forward to seeing your final solution.
Interesting thread - thank you all. I’ve just ordered a pair of these strobes from Flytron (one red one white) for my Mini2. Is there a “correct” placement for these lights given they are different colour or is it irrelevant? I realise that they fit under the rear motors but wonder if there is an accepted configuration.
TIA
Dave
I personally use the red on the rear left and the white on the rear right so i can see orientation of drone. I have rear and down facing clips depending on how I’m flying, downward facing when up high and rear facing when flying low. There really isn’t a correct way, as long as you remember where you put them and why. @ash2020 can sort you out some nice 3D printed holders that clip onto the legs for the measly price of a pint or two
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I did thank you! A very generous discount too.
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My mini 2 was over 250g using the clips with 2 cree’s and an ND filter. So I used the 3M dual-lock fastners that came with the Cree’s to keep it under 250g. Never had any issues with them coming off… yet. 
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Thanks Colin. I shall have to pop mine on the scales! I’m planning on using the lights for occasional low-light flights so probably won’t use the ND filter at same time but will be good to be certain!
