Strafing a tank with MG's with the intent of tracking it, is sound. Just might take a bit longer with peashooters.
If you keep coming in low, you are ASKING to get knocked down by the main gun. I've made the impatient mistake of coming in low, and have paid for it a few times. When I'm patient, I come in high, and to their rear if I can. Only when you know their turret is out, do ye come in low. Even then, avoid coming in from the front as even that lil peashooter of a hull MG can kill you, not to mention that's where the bulk of the armor will be. Rear is best and side is good (more target in cross-hairs).
If you keep ripping the wings off an A-20 or B-25H, practice more with them. It's quite easy to avoid doing that, and I find the 25H better for me because of the 75mm on it. Even a high attack angle against a tanks rear can kill with the 75mm. T-34's are a pain and Tigers are darn hard. M4's and Panzers I find the easiest with the 25's 75mm.
As for my Primary tank buster, it's the Hurricane IID.