Tarptents with poles

[mingus]

For those of you using contrail or sublite tarptents, do you carry poles with you or rely on finding trees in suitable locations to hang it from?

Also, is it possible to use your bike as the pole for the contrail? Seems like the pole is placed vertically in the centre so using the bike upside down with either the forks or wheel supporting the tent might work, not sure if the frame would get in the way of the mesh or fly though.