I put my prints in face down , then immediately flip about 4 times to get good coverage on front and back of print.
Then I keep the print face up for the balance with good agitation or flow.

The most important thing for me in development is watching the print emerge, I can see where my dodge and burn is working, or not, where more is needed and basic contrast balance. I turn the lights on for no more than 10 seconds to judge the density of a print.

Looking at the print in the developer is critical.