I used to ride rollers when I was racing, now I just dress a bit warmer and keep on riding.

Rollers will make you smooth out your technique. If you come off the side of the rollers the wheels stop pretty quick, crashing is a different story. I have never ridden them, but I believe they make rollers that can be converted to a mag type trainer and have a fork mount on them. My wife has a trainer that uses the rear wheel of the bike to drive it and dial in the resistance.

Aaron