MGSV TPP: Farming offline GMP & Heroism with okapis

This area is in Angola-Zaire border region africa. Fultoning each okapi gives 50k GMP & 120 Heroism, 24 fultons (before you need a resupply) adds up to 1.2M offline GMP and 2880 Heroism. you can also use a tranquilizing sniper rifle but i found that it takes more time since you have to stop and aim. You can only fulton 3 okapis in each round and you shouldn't use loud weapons because they will attract enemies nearby and ruin the whole process.