nice!!
set up of the rollers themselves is important too...
- make sure a vertical line going through your front wheel's axle goes though the axle of the front roller or as close as possible, slightly behind is ok too
- depending on the size of your bike bike your front wheel and back wheels might not be at the same height off the ground when place on the rollers, meaning your bike is actually angled... when at the same height it will help your bike to sit in the rollers better and prevent them from "popping out" as easily... measure the distance from the ground to the axle of both wheels.. the two heights should be the same.. if they aren't get something to wedge under the feet of the rollers (some have twist adjustable feet) until the axles of the wheels are at the same height... this can also save your butt while on rollers until you get used to it you sit a whole lot more than on the road and with the seat pointed up can make your butt and nether regions get kinda sore...
- i have a giant tool box in the middle of my rollers so i can stand on it and can be at the same height if the bike was on the ground and i'm not stepping up to get on the bike
eventually if you want to do real long workouts of any length you will need to:
- get as big and powerful a fan as you can get your hands on and if you can locate close to a window so the fan blows cool air... even better
- learn how to stand (gives your butt a break) and ride no hands give your back a break...
other advice would be to use a big gear to get started and when doing anything like reaching for a bottle... with the big gear the wheel turns faster per rev meaning better stability and since you aren't spinning as fast there is less side to side motion meaning less wobbling and chance to go to far, over correct, panic and i think you know the rest... : )
i think you've realized from falling off a few times that you really don't hurt yourself (well maybe your ego takes a hit from the family...) and this kinda make you settle down a bit... biggest thing is to just relax and realize you are just riding a bike and falling off has WAY less consequences than on the road
but it's really good to focus on something in front of the rollers and line that up with your front wheel... then you know where you are on the rollers without looking down.... don't want to be looking down too much