If you have full HQ gear + overmelds + food, use about 4 or 5 FC Perception buffs, that will really sky rocket your HQ total (I used a total of 3 earth days worth, so about 20-30 6pm-6am windows with 1-2 HQ catches each).

Also another trick not widely online, use Astral/Rose Gold gear in your accessories and put +5 Gathering/+5 Perception in these slots (one overmeld, so whatever is cheapest iyo) this will add a few more points of each.

But yes FSH is total RNG which is fine, I don't mind this class acting as something totally different, 1.0 FSH was a dream, but don't think they will ever go back to it sadly.