Using Illustrator to Draw a Continuous Line Pattern

Hello Everyone,

I'm a bit new to the Illustrator game.  What I am trying to do is create weather fronts in a simplified manner.  Currently I have to pencil in a line and slowly attach the appropriate semicircles/triangles to simulate what the front should look like.  An example of what I am talking about can be found at the link below. 

http://okfirst.mesonet.org/train/meteorology/graphics/Fronts.gif 

As you can imagine, this does not give me a uniform shape as it relies on best guesses for placement.  I wanted to ask if there was a way I can create a base pattern, like a line with one triangle, and use a pencil type tool to string multiple of these patterns together.  I would also need the pattern to be bendable though, which may be difficult.

Any help on the subject is appreciated.

Thank you!