Rollers make for a good high cadence work out
I do some of my training on rollers. You just need two sturdy object to hold onto so you do not fall forward or back.
With a Coker at first be careful not to rock out of the rolls. Work slowly up tp speed until you learn smooth power transfer to the pedals. Other wise you
may start to bounce a bit.
First set up a 20 inch box fan in front of you. Have a towel handy to wipe the sweat. To increase the resistane lower the tire pressure.
At a few time trials I warmed up on my Coker with rollers between two cars. You can really spin on pavement after a unicycle warm up on rollers. Give it a try.
Yes I have many an hour on rollers with both a 36 Coker and a 43 Semcycle.