I bowl in a couple of later night leagues in the same house. God forbid, the house should re-oil the lanes during the evening, but I have never seen that happen. You start with a fairly light volume which goes downhill as the earlier leagues bowl. So going in, you generally know what to expect. I start with my Freeze and move left as needed. I have used my White Dot as a strike ball several times. You do what you must to knock down the pins.
As Trash Heap accurately noted, trying to increase speed has drawbacks (speaking for myself)---timing, balance, and accuracy issues. Many of the guys can tweak the speed. I have done it, too, but with uneven results.
No complaints here. I enjoy the sport, the social aspects, and the evenings out.