I dunno about getting 80 certs per hour, but I can normally get about 100 per session if I really wanted.
It's a bit gimmicky, and not particularly fun after awhile. But basically you just ignore the whole team dynamic and go after major capture points. So if your team is about to capture a biolab or something, just jump in and grab free certs. Then hop on a plane or ATV and follow the map to the next free capture point. Rinse and repeat.
...eh. Hardly the best way to get certs. A major capture is worth 1000 XP, which I believe translates into 2 CP. Minor captures are a mere 250 XP, or half a cert. Even if your team is making a lot of captures, I can't see this being a fast way to earn certs - and any solution that is both boring
and inefficient isn't worth bothering with.
You're better off farming kills or support points. Kills are 100 XP each, plus a potential +10 headshot bonus, plus occasional bonuses for ending an enemy kill streak, plus bonuses for
you getting a kill streak. Get ~4 kills in a life, and with the bonuses, you've just earned a cert. Support points are also nice - reviving a soldier grants 75 XP, and the soldier comes back at low health, awarding another 40 XP if you heal them back to full. Alternately, an engineer can get ~150 XP from repairing a destroyed generator or turret, making amp stations an awesome source of loot.
Or, ya know, admit that you're having fun with the game, decide that it's worth $20, and
buy the weapons you really want. Sure, it's nice that everything can, in theory, be available for free... but I'm quite willing to drop $20 on a game that could easily have been a AAA release at $50-60. Think of the F2P mechanic as a really awesome demo (something that you don't see a lot of games releasing any more), and suddenly the pricing of items starts to make sense.