Best thing you can do is to go into it with an open mind. I use to see a coach back home to fine tune a few things. Everyone is different on how often or how long they see a coach.
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Kyle

After about a year of bowling, I was stuck around 150 average and knew it was time to get lessons.

My coach asked me the first time if I was willing to unlearn everything I was doing and start over.  He warned me my average would go way down, and I would need to "practice, practice, practice" as all of my bad habits would be fighting to come back.

He was right about everything.  And he got my ball speed and revs up, I consistently hit my target, I am way more confident, and I look like a completely different bowler.  Now, after about 4-5 months of bowling like crap, 5-6 lessons, and lots of practice, my average is going up again, and I just bowled my highest game ever (222).  

I am so glad I got a coach!

I went to the coach today and it was awesome.  My problems were easily fixed and with a little practice i will be on point for the nation.  my arm swing was not free, my power step was not long enough and had to find a good targeting system for spears.  He really helped me and now I hope I can win some money come tourney time.
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raw need a coach

Weapons of choice
rival
ultra zone
twisted solid
smash zone
twisted fury
vapor zone
pit boss old faithfull