I just sit on the deck and watch them all auger diving in. They'll learn sooner or later. 
I like to fly at about 12-14k on the way to target to stay JUST ABOVE the defenses and survey the situation, then I'll jump in and start turning, usually in a P-51D staying behind Corsairs and Spitfires under 5k. I can't well do that when there's almost always somebody at 20k looking for me. I just had my Typhoon picked off by a 22k Spit 16 when I was at 10k even heading to the fight, not even halfway across the channel to 170. I find myself playing less and less because of that stupid stuff. I'm not a GV guy. I have a Saitek X55 and Pro Flight pedals for FLYING, so I'm not just gonna stay NOE or run tanks, especially when I don't nerf my graphics to make seeing tanks easier. I can't shoot through trees or hills, either, making GVing further unappealing since that's what I always end up running into.
Then there's the whole thing where the Bishops see a single plane dar bar pop up in my territory and have 3 or 4 super planes waiting for me before I even cross the border, making bombers unappealing.
The three-team fistfight at A70 the other night was extremely fun, but it was a good furball, not a pickfest with 20k super planes waiting for folks to come in.