"The Rainbow looks good too, and appearantly it is quite long, which I find important. But as said, I cycle, I do not have Hikingpoles.."
from the Tarptent website (emphasis added)-"Free-standing (with trekking poles) OR staked"
Free standing with trekking poles, or semi freestanding, requiring takes w/o…
I'm pretty sure Peter Nylund of the Yeti Rides bikepacking blog uses a TT Rainbow for some of his bikepacking trips.
But even for shelters that need a pole or two- they sell tarp poles for that very purpose. Some people use their bike as part of their shelter support system as well. I've seen a few people who take off the front wheel of their bike to hold up the rear of their tarp, and use the extended seat mast for the front. Another technique was to flip the bike upside down and stretch the tarp over both wheels for a lean-to kind of pitch…
Anyway, just food for thought.
BM