Awesome with the new safezone option. Would be great if you could add these flags in next update.

            if (baseEntity is ModularCar)
            {
                if (HasEntityFlag(baseEntity, ZoneFlags.NoVehicleSpawn))
                    baseEntity.Invoke(() => baseEntity.Kill(BaseNetworkable.DestroyMode.None), 0.1f);
            }
             if (baseEntity is HotAirBalloon)
            {
                if (HasEntityFlag(baseEntity, ZoneFlags.NoHotAirBalloonSpawn))
                    baseEntity.Invoke(() => baseEntity.Kill(BaseNetworkable.DestroyMode.None), 0.1f);
            }
            if (baseEntity is RidableHorse)
            {
                if (HasEntityFlag(baseEntity, ZoneFlags.NoRidableHorseSpawn))
                    baseEntity.Invoke(() => baseEntity.Kill(BaseNetworkable.DestroyMode.None), 0.1f);
            }

            NoVehicleSpawn = 1UL << 54,
            NoHotAirBalloonSpawn = 1UL << 55,
            NoRidableHorseSpawn = 1UL << 56,