I usually do my FSL sets 5x5. That seems to be the most common style based on what I'm reading on the web.
However, I have recently come across a program that prescribes 10x3 supplemental worksets, and I thought it would be a neat idea to try with FSL.
It's obviously a little more volume than the traditional 5x5, and it seems like a nice change of pace thing that could break the monotony a bit.
Additionally, I like to superset my FSL movements w/ pullups/rows, so the volume for those movements will go up as well.
I'm sure someone has tried this already... any thoughts/advise?