The nature of kite traction sports is to "sail" across the wind in all directions effectively navigating to a desired destination and eventually
returning to your starting point. If you have to walk back, you are not sailing and most likely took an incorrect line downwind. The idea is, don't
follow the wind away unless you can use that same wind to return.
Coming upwind means positioning the kite in the sky where it will provide efficient power (and therefore forward speed on the ground) to come upwind
in a series of upwind lines (reaches). If the beach is narrow, you will have to make many short reaches.
This could take a very long time if you have followed the wind downfield. Better thing to do is make the same short reaches downwind only a short
distance and return with short reaches upwind. You never get ver far from camp doing this and if the beach is narrow, and you don't go very far before
reaching the the end of your line, but learning and practicing sailing techniques is what kite sports are all about and will pay off when you find a
more suitable location.