I created a public race that begins shortly (apologies if it's already started by the time you read this comment!), if anyone would like to join and try out the "multiplayer" mode: https://8bitbyte.ca/sailnavsim/races.php

Just copy the race ID (809d3260e3e6b76da6282842cef7a342 for this one), and join the race from the start page.

Also a note that anyone can create a public race with custom parameters, and anyone else is also free to join that race by using the published race ID.