There are at least three good reasons that one might want to have an insulating blanket over a Hot Tub . . . while it is in use.
The first and most obvious is to help contain the heat so as to lower the cost of heating the water.
The second reason to have a blanket would be to allow the user to soak in hot water while having the air around their face stay much cooler(as some of us prefer), in other words to keep a barrier between the hot water and the cooler air above.
The third reason to have a “blanket” would be to keep the water from splashing up into the users face as so often happens in some Hot Tubs.
The problem is: how do you utilize a blanket without restricting the mobility of the users?
Here is the answer . . . your “blanket” would be comprised of a large number of small floating balls, somewhere between the size of a ping pong ball or those balls used in the kid’s play area at McDonalds. The density of the balls would determine how high up (or low down) they would float on the water as well as determining the effectiveness of the insulating qualities.
With a tub full of lightweight floating balls, the user would have complete free mobility while reaping the insulating effects of a “blanket”. The balls could be larger and one deep . . . or smaller and as many as three or four deep, the latter scenario providing the best insulation. You could also mix the sizes to help fill up gaps.
A large fishnet bag such as those that onions are packaged in could be used to gather the balls into and store them, suspended above, where they can dry out.
If made from a light weight wood, it is likely that the floating balls might have a massaging effect as many massaging implements are made with round wooden wheels.
Related posts:
- River Clean-Sweep Apparatus Occasionally I will discover that one of my ideas has already been thought of by...