Not hardly!
That's part of what makes the event fun! It gives people a chance to run whatever they have, get some tweaking done, a chance to run on the water with others that don't normally do that or see what's going on with nitro, gas and electric boats. At one meet, we had a .12 'rigger up racing with a gas cat, where else are you going to see that? I don't advise people to do that but it's their boats.