There's even an easier way: Get a LAW, then get in the Jeep and put the rest of your team into the M113. Then follow the small dusty road until you reach the cost in the north. Then you block the street with the M113 and wait for Guba. He'll try to leave the road, so kill the driver and the spetznatz. After capturing him, get with him into the jeep and drive along the coast road heading east. On the left you'll see a vehicle, it's a Shilka (about 250 metres away). Stop immediately and kill it with your LAW, then just proceed on driving east... after about 5 minutes you'll get to the end of the island, move left, search and destroy the scud