Since it looks like John Hunter and the Imperial Irrigation District Board of Directors are going to make the so-called "lifelines" a reality, I would like to offer a few suggestions that might help everyone involved.
First and foremost, every "lifeline" needs to have a sign posted on both sides of the All-American Canal that clearly states that those who might use them are taking their lives in their own hands and that the United States will in no way be responsible for any injuries or deaths incurred. We need to be protected from all legal liabilities.
Second, I would propose that Mr. Hunter install a "test-line" every five miles. These would run along the shore of the canal and be about as long as the canal is wide. Anyone who doubts their physical capabilities could pull themselves upstream to test their relative endurance, without risking their lives in the deadly currents. When someone fails the "test-line," it could save a life.