One guy I saw had a bright Blue ones at the front and a bright Red ones on the rear, he was highly visible in the dark.
I don't think 3M do Scotchlite in bright colours, which would work better in daylight - I could add a few cheapo dayglows.
Those PlanetX twin lamp lights are pretty good as one can have the fornt and rear lights active at the same time, 3 modes for the front and 6 modes for the rear.
I didn't read the instructions to start with - why are they always such damned tiny pamphlets? A link to a PDF online would be nice: double presses activate the red lights, double presses toggle through their modes. Single presses do the same for the front white LEDs. Starting with camera off, if you set the front white LED mode, you can double press to activate the red LEDs. But start with camera off, if you select the red LED mode, you can't have both reds and whites at the same time.
In theory if one uses Trevors idea of a pannier rack one could mount a light each side on a 700mm wide bar so the forward beam passes the riders hips.
To any vehicle whether front or rear they will see two pairs of lights spaced either side giving the wider impression.
I've got a rear lollipop, and some combination of that and my fsckoff bright red light flashing in horrifying fashion is certainly influencing all but hard-boiled taxi drivers to give me a wide berth - so wide in fact, it's harder to capture their number plates on video. But some cut in close at front, hence my wanting to mount this Planet X light to my right handlebar end, to show width there at night (no chance in daytime). I'm showing horror behind.
However, I have got a Mimoura handlebar extension which I could mount to my rear pannier rack (using hose pipe for padding, held with jubilee clips - same way my headlight is mounted to the relatively thin end bar of my rear pannier rack), and mount the light to that, in addition to the lollipop which is more useful than that light during the day. If doing so doesn't impede the folding of my bike, I could add another of these flip out lollipops to the other side of my rear rack, to show width day and night.
so the forward beam passes the riders hips.
That'd add a bit of side lighting too.
Mounting the lamps so that the beams/light fore & aft can be seen means handle bar use will cause either the wrist or fore arm blocking the plain where one wants the light to be seen in from the rear.
I suppose one could use the action cam various mount extenders raise them so any beam is above the fore arm position.
I'm going have the light hanging down from the bar end so nothing obstructs the light, and add extenders if necessary. If anything obstructs from there, an extender with a ball joint could angle out a little wider. There are oodles of different types of GoPro mounts including right angle adapters (to extend further out) and doubles... so you could fit two or many. I'm also going to ziptie my ancient flashing red to the extender arm, when it arrives.
There's at least one ebay seller offering custom 3D printed GoPro mounts.
I was thinking of mounting one under the camera on my chinguarded helmet instead of on, to look more Halo than Tellitubby - with adapters a dual light could stick out to one side, so rear red lights are visible, but that's treading into seriously silly territory. GoPro have done a great job of popularising bolt-through tongue and groove joints, for action camera mounts; quite versatile.
