Fishing Line Quad-Brid?

Over a cuppa with my fishing line "sponsor" (link), we discussed how to further improve fishing line's playing characteristics.

Since both that thin fishing line and poly have high tension loss, we had to pre-stretch and string both at very high tensions.

That led to racket warp and poor string durability. And poly STILL lost heaps of tension.

We liked the slick poly for the fish mains to slide and snapback. So we couldn't eliminate it. Then we thought, how about reducing a few poly crosses and filling them with something else?

That's how this quad-brid came about! Yep, four different strings with eight knots!

A thick fishing line, leftover from some previous stringing experiments was used. After some planning on where to tie the knots and estimating the tension adjustments, the stringing started.

The frame narrowed by only 1mm to 26.2cm this time, so the tensioning was quite evenly balanced out. 

Playtest:
- After hitting for 15 minutes or so for the strings to break-in, I started wondering if tension holding was too good. 
- It felt more like a board than a set of strings. But this was a good problem to have since we wanted to lower tension to increase durability!
- The only two things I did not like about the "boardy feel" was the extremely low power and reduced spin. Control and ball feel remained very good.
- As usual, a centre main string was snapped by a flat serve.