Well, this is how I make my turns usually. First I make a segment of track that is slightly curved in the direction that I want the turn to be. Then I bank it to the maximum degree bank that the turn is going to be. Make sure that it doesn't turn to fast without banking or you'll have high lats.then I make ALMOST the whole rest of the turn with another segment and I bank that the same banking as the first one. Then to finish it I have the turn slowly unbank and it turns in the same direction of the turn does (obviously). A lot of people bank in straight lines (you can see in the top view a straight line of track) and then they make the curve and then unbank with a straight line. This is the improper way to bank but it is realistic to do for ONLY woodies and arrow/vekoma coasters. No other types of coasters bank like that. Another thing that should help you with turns is the con roll icon. You should basically use it whenever you want something to bank continuous (like a turn or zero-g roll, or heartline) instead of turn, stop, turn, stop, and makes the bankings flow a lot better. C2 is another icon that will help because it evens out the control nodes on each side to make helices smoother and make some turns smoother, too. I recently learned this so I havn't used it on my coasters yet. So just keep these things in mind and you should have good turns.