Norma Jean Little wrote:
Can you double your radar cross section (RCS) by installing 2 radar
reflectors?

You cannot make yourself a bigger target, as in 'wider', but I should think that
using two reflectors, fore and aft or port and starboard - separated - would
increase the strength of the signal you reflect.

Depending on the way the receiver is configured, the display 'blip' might appear
larger, but only slightly. More importantly, an increase in reflected signal
strength tends to increase your target's persistence on the screen.