ok well its easy
fix unit
add in init line this addaction ["FIX ME","this setdammage 0 **or 1**"]
and for the laps you make a trigger on the finish line and place in the init line this exec "lap.sqs"
lap.sqs
_player = player
_lap = _lap+1
hint "LAP number 1%",_lap]
_lap == 3:goto winner
exit
#winner
hint "1% is the winner",_player]
;then have it end the mission or do what you wont it to do
ok this is off the top of my head so dont quote me on this but is a genral idare i wish i was at home ill do it when i get in ok good luck pleae post it when you have sorted it so that i dont have to do it when im in ok good luck