How do you find a hole in a raft?

Question

i have this raft http://www.dickssportinggoods.com/product/index.jsp?productId=11731

but its smaller. doesnt make a difference, it got a hole somewhere and its disinflating

just need a method to see it so i cant patch it up :]

Answer 1

I usually do what these guys do, but with a little bit of dish soap mixed in some water.  You'll hear it & see it no matter how tiny the puncture is.

Answer 2

rub soap and water over the raft, look for the bubbles

Answer 3

wet the raft and apply some weight to it then  inspect it listening for hissing and watching air bubbles. re-wet if needed.

Answer 4

A spray bottle of water with dish detergent will do the trick. Alternatively, if you have a swimming pool, partially inflate it and hold it underwater, looking for the bubbles.