First, you need two dictor pilots, preferably in hyperspatialed dictors. Pilot A places a stop bubble 100km off the gate, burns towards where the enemies are coming from and drops another bubble. Pilot B stays on the gate at 0km ready to drop another bubble, then jumps through and gets into a stop bubble position on the next gate. In this time, pilot A has jumped through, dropped a bubble on the In-Gate at 0km, burns toward the next gate, drops another bubble and warps to the next gate, now taking Pilot Bs job. Rinse and repeat