As others have mentioned, it sounds like these links have little potential value. You could always drop a few comment URLs, tweets, G+ posts to those pages to help them get indexed, but they would still pass very little authority and I can't say it would be worth the effort.

Perhaps you could contact those same Suppliers and offer to give them a testimonial or find some other way to get your company linked on a more prominent page of their website. Think about what you can offer of value for their website.

My simple advice: Create the best page you possibly can around a few of those topics. Make the page compelling and informative and then see what it ranks for. If you are focused on the basic topic (kayak fishing) the keywords will find their way in naturally.

After a bit, you may notice one of the pages ranks well for 'kayak weight limit' and decide to make that a more prominent headline and include the exact phrase when editing.

Some content ideas:

• Essential Gear for Successful Kayak Fishing
• Top 5 Kayaks for Fishing
• 8 Tips for The Beginner Kayak Fisherman
• Rigging Your Kayak for a Day of Fishing

Make these pages be awesome. Put some nice pictures in there. Don't make them just because you want to include keywords. Awesome pages will earn shares and links. Helping you eventually rank for more competitive terms such as 'kayak fishing.' In the meantime, you will get quality long-tail traffic that you didn't even try to target.

As Kevin said, HTML is a better format for the web.

Perhaps you can offer this as a downloadable PDF on a lead generation page? You can certainly use this asset in more than one way.

If you are just changing the content a bit based on location, I think canonicalizing them all back to the root page is OK.

If this is redirecting based on translations, you should look into using the hreflang tag. It tells the search engines that there are alternate versions of the page in different languages.

Here are some resources for you.

• https://support.google.com/webmasters/answer/189077?hl=en
• https://moz.com/blog/hreflang-behaviour-insights

Once that is in place, each page can canonicalize to itself.

• domain.com/us/
• domain.com/fr/

Page Authority is just a marketing metric made by Moz and won't update until they re-run their index, which I believe is still on a ~monthly timeline. Just because Moz says a page temporarily has a PA of 1 doesn't mean Google sees it that way.

If you have a good reason to change a URL structure, feel free to do it as long as you have 301s. Do not change your URL structure for small, un-needed reasons, such as cramming a slightly better KW variation in the URL.

Ideally when creating a new staging area, you'd want to exclude crawling via robots.txt.

Add the NoIndex tag to the head of your pages to get them removed from the SERPs. Make sure the page is still crawlable though, as if you exclude it in robots.txt first and then NoIndex it, Google won't be able to see the new NoIndex tag.

If there are not a lot of pages to remove, you can request page removal within Google Webmaster Tools.