My advice on that remains roughly the same as the advice on the original ideas of PageRank Sculpting. Even before we talked about how PageRank Sculpting was not the most efficient way to try to guide Googlebot around within a site, we said that PageRank Sculpting was not the best use of your time because that time could be better spent on getting more links to and creating better content on your site.
PageRank Sculpting is taking the PageRank that you already have and trying to guide it to different pages that you think will be more effective, and there are much better ways to do that. If you have a product that gives you great conversions and a fantastic profit margin, you can put that right at the root of your site front and center. A lot of PageRank will flow through that link to that particular product page.
Site architecture, how you make links and structure appear on a page in a way to get the most people to the products that you want them to see, is really a better way to approach it then trying to do individual sculpting of PageRank on links. If you can get your site architecture to focus PageRank on the most important pages or the pages that generate the best profit margins, that is a much better way of directly sculpting the PageRank then trying to use an iFrame or encoded JavaScript.