Another way is to generate a random vector:

#local vResult=vrotate(x,<rand(Seed),rand(Seed),rand(Seed)>*360);

#if(vdot(vResult,vN)<0)
   #local vResult=-vResult;
#end

Basically, generate a random vector, and if it's in the wrong 
hemisphere, flip its direction.

Regards,
John

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