Actually, the "arrow" configuration is equal to about 3.3 springs.
The problem (both with the guitar first pictured and trem springs in general) is that tremolo springs come in different lengths. This means different 'pulls' or 'strengths'.
In my shop I have them separated into Short, Medium, and Long.
From the looks of the picture, and the description in the post, I'd guess that you're running (5) Long springs. These will have lower tension and not hold your trem as 'tight' as Medium or Short springs.
(3) Short springs can almost equal (5) long springs.
I've seen UV's running 3 springs and 11-60.
I've also seen 6's running 5 springs with 9-42.
It may take a few tries (and a shitload of spring inspection), but eventually you'll find the set that works for you.
It's always best to run matching springs- i.e. all Short, or all Medium.
The double-loop end springs that you're looking for are available (
link). They're usually reserved for Fender Mustang and/or Jaguar trems. If you install them on a Floyd-type trem, you may quit guitar altogether.
It will feel THAT bad. Those double-loop springs are designed for an entirely different tremolo system.
My suggestion for this particular guitar: (4) medium springs. That will give you the right amount of tension to keep you in tune, keep your claw far enough from the cavity wall for necessary adjustments, and still allow you a nice smooth (but firm) tremolo feel.
And don't forget to clean and lube your trem posts and knife edges!!!