[Fancy Snorkle Spinner]

I was just searching for a doodle guide on the internet hoping to find some answers to my question and in one of the guides it said that during a cog invasion doodle experience for tricks is doubled. I have never heard of that and was wondering, is there any truth to that?

Also, another question, does anyone know how many times a doodle has to successfully complete a trick for it to go up to the next laff point?