Such a Simple Concept

[Gale]

Such a simple idea, is it plausible? Would the salt in sea water have a different result? Would the hay get heavy and sink?

[Norval]

It is possible that the hay would react differently in salt water.
They should have used sea water to test this idea. :)

[sfth13]

that would be pretty darn cool and cheap if it works on salt water...