-> if you pump it up pretty full then wet the back of your hand lightly run the
-> back of your hand about 1-2" away from all the seams and see if you can feel
-> the air coming out. if that does not work you are stuck with soaping down
-> the whole mattress. Start with seams and points where the mattress flexes.
-> There are usually little smiles ) in the corners and they tend to be where
-> leaks form. You could have a puncture instead of a failure and that could
-> be anywhere. If you have kids just pump it up and offer them 2 bucks to find
-> the leak.
-> Make sure it is not the cap before you start doing too much work!
Thanks, Wayne. I think I'll try your idea first, before I get all soaped up.