Hanging with fire: weight increase?

Hi folks

Just curious how you do it.
Some say just go with you feeling, others say to increase one pound a week.
Since I want to make sure, that I get the best results:
What is your routine and when do you add which amount of weight?

I have been increasing weight when my post set strain measured in bpsfl drops under 2% for 2 or 3 sets. I hang one set per day and occasionally take a day off so this may be over a 4-5 day period.