The Bernoulli effect itself which allows an entire trash bag to be inflated from a single breathe should be possible to use to improve airflow with minimal fan input also.
Leverage the Venturi effect from Bernoulli's principle to cool your S19 Loki rig at the lowest fan speeds possible.
https://structur3.io/products/s19-single-or-dual-board-air-baffle-set
Discussion
I am getting fantastic results with only 2 fans in push configuration with it!
https://github.com/SatStackingPleb/S19-Hashboard-Performance-Profiles
Adding more data as I go, but just got all the JPro stock config benchmarks this last weekend.