I hit the field a minimum of once per week on Saturday or Sunday so long as it isn't raining, thick fog or outrageously windy.

On 3-day weekends, I usually go twice.

Generally 3-5 flights per 1/2 day trip but sometimes 7-10 if I'm having a particularly good day or the weather is nice and I end up staying longer.

I also like to use one week of my vacation strictly for my stuff when I can swing it. I'm planning 7 days straight of flying in a few weeks.