The simplest way to think of it is as a series of ramps. These can go light to heavy or heavy to light. If I were going to use wave loading for 8 x 8 it might look something like this:
set 1 - weight I can just barely get 8 reps with (without a spotter)
set 2 - set 1 weight minus 5-10lbs
set 3 - minus 5-10lbs
set 4 - minus 5-10lbs
set 5 - set 1 weight plus 5-10lbs (this will usually feel easier than your set 1)
set 6 - minus 5-10lbs (about set 1 weight)
set 7 - minus 5-10lbs (about set 2 weight)
set 8 - minus 5-10lbs and do AMRAP (as many reps as possible)
That is just one example of one possible loading method for 8 x 8
Interesting, but it's not an 8x8 anymore. Reps must be all over the place!
Set four must be very high rep, as it's up to 30 lbs lighter.
Do like the idea of set 5; I usually go back to my starting weight for an extra work set at AMRAP and find I can do more reps, as it feels much lighter.
It stays at 8 reps. IIRC both 8 x 8 and GVT use fairly short rest periods and high intensity. Because of this, if you just did straight sets with the same weight, the weight would have to be very light for all 8 sets. You could never do all 8 sets with your 8 rep max while maintaining your intensity. Wave loading allows you to maintain the intensity while using a cumulatively heavier weight.
I think I'd need a computer to keep track of all the weight changes. I usually work out after teaching science for 7 hours, so my brain is spent when I get to the gym. It's a pleasure to do something purely physical after explaining thermochemical equations over and over again.
I do my calcs before the gym on a little piece of paper that I bring. Everything is laid out; weights, sets, reps. Otherwise I'd be a basket case.
It's hard enough for me doing the math loading up the plates.
I do the same thing.......Sometimes I get lost in the workout and just have enough trouble trying to keep track of what set I am on.