I started riding rollers a few days ago and love them. Today was my longest ride on them which was about 35min.
Once I am on the rollers I am not able to shift my sitting position or stand and readjust my seating position compared to on the road.
Once I got off the rollers my ass and privates were a bit numb, pretty sure it is due to riding the rollers aka "planted" on my seat which caused this.
I know the more I ride the more comfortable I will be able to stand up and readjust my sitting position but for now the only thing I can think of to rest my bottom is to stop and get of the bike for a couple sec and hop back on the bike.
I've had the same experience - some numbness on the rollers or trainer that is hard to relieve b/c of the difficulty standing up on the rollers. I usually do 35 to 40 mins on the rollers and many of the people around me are able to stand, drink and even text while on the rollers (although I'm not able to do so yet). If I crank up the rpms (100+) I can usually get a short coast on the rollers, when I can get up off the saddle briefly.
Better saddle, with cutout. It's just like wearing a helmet. How much do you value that stuff? You should be able to sit for an hour before bad things happen, which would mean that bad things would never happen, which is very important. It's additive.
For now, just unclip and stand on the roller frame for a minute, say every 15 minutes. After you get better, you'll be able to stand and pedal fine on any roller set. Start by putting the weight in your feet and "hovering" with just a little saddle contact to maintain frame steering. You'll probably need to shift into your biggest gear and pedal slowly. That's very tiring on the legs, of course, but practicing that will gradually allow you to fully stand. And "tiring on the legs" is probably good, too. Rock the bike normally. It's actually good training. One sees too many people whose front wheel goes back and forth while out of the saddle.