i got an aswer to that....
Thier is only 1 loot pool... since thier is a 3k ped hof on hunting a day it seems, and all the top 10 hofs are 1k+, that really means mining is shit outta luck... this also might have happen because of the spots that changed... MA doesnt spawn or everywere, because that would be insane to have some guy sit thier and say "i wanna put a hof, here, here, and here"... they do it by computers, meening that once thier are about 20 spots that will hof on the map and the rest will only be stuff up to abundants... and since people telephine hofing spots, more and more people telephone it, and we all mine the same spots so when they do respawn a hof its low.... for example a great starts at leik 40 peds and can go till 55( i think) this meens that when the great respawns it is at 40 peds, but if u give it a week or so it will be up to 50+ and u will get a global.... same thing for the vasts and stuff... forexample, u get a massive... they start at liek 300 and end at 500... this means it may take a month for it to get thier, and in that time 6-7 people r mining the same spot the same day meaning that it will only have time to regen to 325 peds, and look liek a plentiful...
just sum stuff i no that is true... if u through in the fact that thier is mineral layers, with the amount ofpeople that mine their, and the time span between them, u will see how badly your chances r for having a great+ let alone have it fully regenerated...
yes, i would say this info is about 70-80% true... ive mined for about a year and a half and it has worked for me...