I have owned most of the top brand hammocks and found the TtoT switchback 1.9 single and WL snipe 1.5 single to have no calf pressure no matter how I hang it.
Minimal fiddle factor.
I have scratched my head as to why and not come up with any good reason.
Both hammocks do not have a SRL and seem to be comfortable with angles from 20-35 degrees.