I would recommend checking out some of the long drive champions and see if they have information on how they do it. Some are incredibly flexible, which I am not, so that won't help. But they also have other techniques you can explore.
Non-conforming heads will have COR that is higher, but it may also come with increased variability in launch and off axis spin, which can affect accuracy. If you have access to eBay, you may find low cost options to experiment with.