Strategies:-
The Pelican is also a well armored Aviation Unit. But its only disadvantage is that it is AG and being an aerial unit, you can expect alot of other Aviation Units starting to swarm to you. With intensity afterburners you can escape the enemy. Also remember, if you want to kill ground units like moths or grys, you need a combination of both speed and strength. Try to get a weapon that does more than 200 points of damage so that you have a higher chance of killing what you are targeting.

AG:-
The Role of AG: Kill off Arbs, nukers and other support units. Support units include Arbs, Balls, Orbus, Red Eye, Medic, Gear Doc and anything you can think of. There isn't much to emphasis on AG so I'll leave this to your imagination.