I'm looking at getting at least 2 of these, 1 for each of the trikes. But I've also notice that in addition to the whips (which are 5ft long) they also have pole lights, which are 2ft. long. I'm wondering if (for light purposes) it might not be better to have 2 2ft pole lights mounted instead of 1 5ft whip. I know that with the whip, you can place your flag on it - but does that offset the possible benefits of having 2 extended sets of lights, with 1 on each side of the bike?