Actually, the "pool" of skill gains available for a day should be viewed as 36 individual gains of .1, meaning if you were using an alacrity scroll you could get 36 individual gains of .2-.5 depending on your luck. You just need to log on quickly, use the skill to get your gain, then log out as quickly as possible. Then wait til your RoT timer is up and log on and repeat these steps. You can stretch the 15 minutes of the alacrity scrolls timer over several days this way and gain about 30.0 points of skill in a matter of a few days. So if you use an alacrity scroll you can use it very effectively on skills that do not flag you for battle and prevent you from instantly logging out. I find it best to raise the skill up to 80 using the regular method without the alacrity scroll then use the scroll to take you from 80 to 110 or higher. Remember your timers, 10 miuntes between gains for skill 80-99 and 15 minutes for skill of 99-120.