Arrow symbology

[Christopher Watson]

Hello,

We're trying to plot a series of velocity vectors at specific point 
locations (GPS sites), reading direction and magnitude from an SQL 
database.  We basically want a line with an arrow head at the end of it.

We can position symbols at intervals along a line, and orientate them 
along the line, but not put them at the end of the line.

Does anyone have any tips or work arounds?

Perhaps we have to generate a polygon as the arrow head, based on the 
vector end point and orientation?

Appreciate your help.

Thanks,
Chris