Probably same awsner as most snowboard goofy/regular polls.
These days its basicly 50/50
Yes, there is a bit more regulars than goofys, but close, yes.
The most interesting is there are MANY who ride much better to one side than the other, and choose to ride waves this way mostly or always - or maybe even select their wavespot after which side they are best at.
Others can ride okay both sides, in waves, but not that many actually
So here you often see big differences, and curious to see how the numbers are here, although I fear the answers will be too low in numbers (or too selective) to represent much of a picture Waveriding Regular or Goofy or both ?