"A competitor shall make it known to the event organizer prior to shooting if they are unable, for whatever reason, to comply with a particular shooting position and obtain permission to use an alternative position provided no unfair advantage is gained."
Does old age & wobbly knees help ?
Failing eyesight !
permanent ringing in the ears ?
We can but try !
Move a bit closer to the far ones , eyes are handicapping us !
sit or lie down , standing is too wobbly for us senior citizens ?