The moth is a development class that developed foiling, but it is not what defines the class. The class includes lowriders as well as foilers and is nore about supporting skippers to come up with new ideas.
Definitely. Lowriding boats have seen a revival in recent years as old ones of all vintages are restored, and even new ones are built. They are very much part of the fabric of the class and our rich history. It would not be part of the inclusive nature of the moth fleet if they were not part of the class. Typically, lowriding boats and foilers don't race against each other due to the very different styles of sailing, but occasionally you will see them at the same event.
To be honest, based on class history, the onshore antics of the lowriding fleets are the stuff of legend, and the foilers are lagging sadly behind.....
Moths can be as expensive or as cheap as you want to spend. Second hand scows are often given away and just require some love to get them going. Second hand foilers can be obtained for only a few thousand and second hand masts, sails and even foils are always available.
If you are handy with resin, or wiling to learn, you can do repairs,even to carbon fibre yourself and their is an endless number of people offering advice. You can even easily modify older boats to get them up to spec. Older balderiders can be found on gumtree and modified to take the newest foils, have the latest geometry and even cut off the foredeck for the super sleek aero look.