The famous Renault FT (also known as FT17) used by the French army during World War 1 is the first tank in history to have a mobile turret, a design still used today.
Weighted around 1 for best results but will vary according to the checkpoint and other settings. You can go as low as 0.5 (it will look more like a generic tank) or you can go high like 1.5 for experimental results.
Trained on SD 1.5 base. Tested on all top 20 checkpoints. Epoch 7 on a total of 10, 23 images from real tanks and toy tanks, some with background, some without background. With multiple colours and camouflage, you can try playing with it. Same thing for insignia, serial numbers, and symbols painted on the armour.
The double cannon will not always work, it's tricky to get a 100% success rate on such a small part. But it should be good enough, especially since it's a small cannon it gets it right most of the time.