ok, so I wasn't leaving the farm therefore neglected to wear hivis leading to it taking 40 minutes for the ambulance to find us on Sunday - an excruciatingly long time to sit with an unconscious rider while your horses are goodness knows where (although she was sort of conscious by the time they did find us, just not very lucid :()
the other thing was phones - I don't take my precious iPhone after having crushed too many under hoof before, luckily my friend had one but it was passcode protected. I could make an emergency call but I couldn't contact the yard to get someone to find the horses before they caused some other sort of accident (of course they were only round the corner stuffing their faces but I wasn't to know that, I couldn't hold two ponies and get close enough to a prone figure on the ground safely to check for breathing, bleeding etc)
so a basic phone loaded with local contacts, some hivis (I could have stuck it on the road side of the massive hedge that obscured us) what else? I like to learn from my mistakes or at least put on a good show of doing so