For Outward Bound and similar schools, all they take
are tarps for shelter. In the Sierra Nevada, Wind Rivers
North and South Cascades, with some trips mostly above
tree line, they use large group tarps and small solo tarps.
Site selection is a big deal. You won't find them camping
on exposed ridges if at all possible. They will look
for large boulders for wind breaks, use rocks as big as
can be carried instead of stakes, sleep on granite slabs
to avoid damaging vegetation and to stay clean (no mud
on your sleeping gear). Sometimes a rock wall can be built
for a wind shelter, tho pulling rocks out of the dirt is
avoided as these often shelter insects.
Tho I don't bring trekking poles or tarp poles myself, the
students are issued tarp poles to make tarp set up easier
when there are no trees.
It takes time, effort and ingenuity to use tarps above
treeline. The discipline that is developed is part of the
learning process in these school outings.
But, you hike your own hike and may want to spend your time
cooking, climbing or taking pictures instead of tarp craft.
A light tent may be more suitable for your needs if so.
One final consideration about tent stakes. In some highly
used areas they are discouraged due to the damage in some
soil environments. In those cases, shelters that require
few or no pegs are preferred or required by the land