flight path in after effects

Hello. 

I'm trying to create a flight path in after effects within a Goggle Studio ....so coming from one point travelling up and then horizontal and then down to another point. I can do it with a dashed line but when my footage moves round the line is vetical so it disappears monentarily. 

I want to do the same thing but use a long solid tube instead.... I can make a solid tube but not sure how to put kinks in it. 

Any help would be greatly appreciated.