IM beyond scrapebox?

ive been doing IM for 6 months or so now and am getting some ok cash out of it but lots of room for improvement. started with autoblogs, but have been making legit sites for the past 2 months.

basically, up to this point, ive been manually making forum profiles, manual comments, web 2.0 profiles, and bookmarks. then AA spamming these with scrapebox.

lately ive been taking a page from my main site and posting spun versions on the main web2.0 blogs with backlinks. basically making a spun copy of the main site... do you really need to go through and do this?

i havent been able to get higher then bouncing around the 5-10th page in the SERPs for my (low competition) keywords. plus a handfull of random long tails on the first page, but no traffic...

ive read my ass off and all that, but feel like i am hitting a wall. do i just need more time and keep doing the same? or do i need to get article/bookmarking software or outsource some gigs? (bookmarking demon, article marketing robot, senuke, xrummer)

something completely different?

How's your on page SEO, and overall content quality?. More times than not, working a bit with these variables gives your website quite a boost.

my new sites are all 100% unique and excellent quality, not spun at all. about 2 dozen posts, updated 1-2 times a week. each post is focused on a keyword that has >1000 exact matches per month and >$1.00 cpc. easy to relatively easy ranking in traffic travis. (low competition)

main kw in h1 tag, related kws in h2/h3 tags. main kw in first and last sentence, 1-3% kw density, one or two anchor text links to related pages on the site. meta titles and descriptions and all that too.

each page is rated a+ for the main kw on the traffic travis keyword ranking tool.