Timber - First wood coaster in NL

http://weeweeslap.com/track_exchange/detail.asp?tid=8764

Hi, first time on these forums. This is my first wooden coaster in NL. I know it has a few 4.5 vert g's but I didn't think about that when creating it. I'm alittle more aware of that now. I would really appreciate some advise and constructive criticism.