I think I have a differing opinion than everyone else. I understand wanting to get out and riding as quick as possible, but really, how quickly can you get the boat in the water, trailer put up, drive back to the dock, pick up the peeps, and then idle out of the no wake zone?
For me, that would take, at a minimum, almost 10 minutes. Surely I could get it down to 5 or so, if it is just me and one other person. But by the time you get the rope out, one person suited up, your still at the 10+ minute mark.
Not sure if were just talking about the super sacked out systems (2K plus), but for my stock 1000 and change ballast in my SAN, it only takes about 8-9 minutes to fill (stock fill pumps). It takes even less if your actually moving at any speed.
I just flip the switch as soon as the boat gets wet, and 99 times out of a 100, by the time the first rider is ready, it's pouring out the overflow.
For me, the empty time is the most important. It always seems the case that when your ready to leave, you want to get out asap. You've dropped your people off, your buddy has the truck and depending on how busy the ramp is, you might be ready to trailer it in 5 mins. On our ramp, it is a must to empty the tanks out first...that is unless you have a tractor. Our ramp sucks BTW.
Just my .02