Assuming that you want to sail tomorrow give them right away and put pressure on those who dart out like small children to change their behavior. Alter your course. Some of the launch sites in the Gorge are difficult. Slippery rocks are challenging to maneuver in 3.5 conditions. Always leave your sail attached to your board.
Unattended sails fly away and are very dangerous.
You can tuck a sail under the cable at the Event site, the Marina and at Rowena. The best thing to do is set up your board, point it into the wind so the harder it blows the more it pushes into the ground. Once you are rigged, attach it to the board and rotate the board and sail so that the harder the wind howls, the greater the drive into the ground. If you have small children at a launch site, stay up wind, and choose an area that has some protection like a tree or a post to defect yourself from runaway sails. Weekends, such as the 4th of July at the Event site, are challenging.