Spinning On Rollers - Learning As I Go

I just picked up a set of rollers from my tri club.  The Navy Tridents have some gear to lend out to members.  I  have spun on stationary bikes and on bike trainers but this really is my first foray on rollers.

A little research on google lead me to a number of videos showing how to set up rollers, how to get onto rollers and then a number of videos of people falling off rollers.  One thing I noticed is that everyone starts out fresh in the videos.  I wasn't able to find a video of someone when he/she was 30 minutes into a session.  As a result, the below video begins 15 minutes into a training session.

What I've learned so far:

• I try to look into the distance, but keep my front wheel, or handle bars, in my peripheral vision.  I was looking at the wall about 4 meters away, but I was unsteady on the rollers and kept drifting off the side.  When I keep my wheel/handle bars in my peripheral, I am very steady.
• Do not put your weight on the handle bars.  Support yourself with your core.  Once I start leaning on the bars, the bike becomes unsteady.  This being said, I can ride with my hands on the brake hoods, but haven't gotten my hands into the drops yet.
• Peddle in circles.  If I start mashing down on the peddles the bike gets into a jerky, back and forth motion.  You can hear the rollers making a noise that increases in pitch as I'm pushing down on my peddles.  I hope to correct this as I focus on circles.  The hope is that this will increase my speed during races.
• I think it helps to have a strong core to keep yourself stable on the bike.  I'm not there yet, but have been working on this for over a year with a bunch of different exercises.