At the end of a session you need to get the kite down. The landing technique is very similar to what you were taught at kite school with a tube kite. If your helper is not experienced in landing foil kites then remind them to grab the canopy and not the lines. As soon as they have a firm hold of the canopy you need to walk towards the kite until there is no tension in the lines.
Wrapping up your lines immediately and securing the mixer will reduce the chances of any tangles.