You try to end asap. The Funnel strategy is based on using the combination of a Support hero and a Hard carry hero.

Using this strategy, the support champion would be played in the mid lane while the Hard Carry takes the jungle to build the farm. However, the twist is that the Jungler … it needs some practice, but you get into it pretty fast. Only last hit but keep it out of tower range Step 2: counterjungle. You hardpush top and hardpush bot.

You pick a bot laner that can shove out pretty fast and a top laner that can shove out pretty fast, so that the minions are always at the enemy t1, so that the t1 takes damange while the hyper is jungling. Basically, keep enemy wave stacked so minions clear your wave quickly. Try to take t1 and t2 asap. Keep track of the duo and roam opposite.