I personaly have found a very nice way to target them....
Wait untill they start shooting at you....go in for them (whatever the approach : rolling, high, low, fast..slow...). You will have a nice perspective from up close when you glide down on them in your chute...not for long though...

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Saw/SaintawBISHOP'S FINEST FLYING BRICKDCO 186th Wardogs (Falcon4 Squad)
http://www.wardogs.org/ "Firepower Mate, that is what separates the men from the boys..."