Now you've opened a interesting area.
I guess if the flier is following the clubs rules then I don't know if fault is the right term but it is a risk you except by being at the field
now if the flier is violating the rules he needs to get the boot.
I don't think clubs have really addressed 3d flying that much and as it becomes more popular then I suppose there needs to be either 3d time or an area set up for them
like helis at the clubs that allow them or just a rule for no deliberate stalled fight.
one things for sure 3d is not going away as the younger fliers seem to like it as do lots of other age groups
I say it better be addressed by the powers to be or it will continue to become a bigger issue
They will always want to fly close they just might have to find somewhere other the a club field to do it at