I have a 2 chamber low profile ROHO. One side is leaking. Can't find the leak. Can't hear it when I blow it up. Can't find it submerged in water. I even put it in the deep sink with two 10 pound weights to hold it under water. No bubbles. I've put it in the water upside down, folded in half, no bubbles. If I sit on it, it deflates in a day.
Anyone got any ideas?