Thanks for reply!
Yes! I do blast using GSA SER for last tiers with kitchen sink including comments. So far it works for me. However I still afraid to use indexers directly to first tier instead I use to use indexers on later tiers. (cause I believe those indexing services using junk and I don't want bad signals) maybe I am wrong but I still careful. So far this strategy works for me.
(Tier 1 built by myself weeks ago manually + 20% of GSA t1 (very picky serverified lists / serlinks / sernune engines)
Tier 2 looks like this:
View attachment 538681
And tier 3 looks like this (i called myself kitchen sink but still i am not using trackbacks / indexers etc )
View attachment 538682
I am having great results with this setup. However, I am still eager to know if it is worth to use indexers, kind of engines, even kitchen sink. I am currently using this strategy on niche site (medium niche) / ecom site.
PS: yes since i use premium services and they scrape by google all root domains are indexed know it myself i guess its the reason this works