The thoughts provided are very good. For our MSAR, we use hi-viz orange
vests with a hunter orange felt sheet over the saddle pad (cut to the
shape of the pad - can be velcroed in place along the edges of the pad
if need be) Also an orange helmet cover (requirement to go out on
Searches). This was tested for visibility with low altitude Search
aircraft (1000 ft ) and made the SAR riders visible from the air as
well. The hunter orange definitely sets apart the rider/horse team, and
if you have a park uniform as well, the orange accessories make the
connection.