Scrapebox High Pr Strategy

I am trying to find high pr links, do follow to deep link to my trade website.

The problem is I am new to the software and the only links I can find have been spammed to kingdom come.

I am looking to get between 30-50 pr3+ backlinks back to my website per week but I am seriously struggling.

I like to manually post comments and in return add value to the websites I post to rather than generic spam comments and was hoping someone could reply or pm me with methods to find good blogs?

I want to get the most out of the software and although it's a black hat forum I know there are some good people here!

I'm in the UK so i'll try to reply a.s.a.p relative to where you are from.

Thx