Skate the End

So I finished skate over the weekend, and what a great game it was. Now my only problem is trying to finish the Rob and Big black pro challenge. I wanted to know if any of you guys had any difficulties with this pro challenge as I am finding it almost impossible to get right.

The only way I can do a 360 flip is in switch mode but then when I grind it is Backside and not frontside and then when I get the 360 flip I do the wrong grind and vice versa.

Did who ever finish this just do it by luck or can you actually do the 360 flip to FS crooked on demand.

Another cool thing I have to mention is that when you finish the last competition you get a whole lot of gamer points and seeing as me and my bro are having a competition as to who can get the most points it helps a lot, it also put me back in the lead.

Any tips would be great.