So, I tried looking online for some information on this but it seems I couldn't find any. From my experience turn the assists on through your control settings. The guide will help with the wind the challenges throw at you, the assist will calculate where the ball will drop with the wind added as a factor. Do not try to three start every single challenge you come across. Wolf Creek has - 186 stars and after you complete challenge 33 Parcel Storm will unlock and this will give you another 162 stars to obtain. This gives plenty of chances to gather your 150 stars. I have not unlocked coyote falls yet. If it's following the same patterns as the others I would think it would have at least another 100 stars for you to get. Which would give you about 450 to get from all 3 courses and easily get you your 350 stars achievement as well. Good Luck, and as soon as I know the amount of stars in coyote falls I will update everyone.
Thanks to Chardy McFly he informed me that Coyote Falls has 174 stars