Yes, install one.

But as a general guide

Downwind (with Kite I assume)
90 degrees or very slightly less.

Upwind, 90 degrees till trapping out, then point to the shrouds till overpowered with max downhaul, then ease the traveller and pull in the rotation until sailing in very high winds (35+) the mast should be pointing at the back beam.

These are the my starting points, you might want to go +/- a little on them for your own style of sailing/ weight