We don't have a built-in way of tracking affiliate link click-throughs, but you might be able to set up something at your end. If an affiliate appends any extra parameters to the end of their hop link URL, our system would just pass those through as-is and append them to the end of your landing page URL, so you could perhaps have some scripting to look for those. E.g., if an affiliate's standard hop link URL is like this:
...they could add extra parameters like this:
...so buyers clicking that link would arrive at your landing page URL like this:
Then you could have some custom scripting in your page that parses its own URL on every visit for the presence of those extra parameters and tracks their respective values accordingly.
Therefore, if affiliates contact you about click tracking, you could ask them to add &ref=YYY&pg=ZZZ to their link URLs, where YYY should match their Affiliate ID (which would thus be unique to them but the same for all their links), and ZZZ can be any arbitrary ID they want to identify which page their link was on (which can be different for every link, so they can track click rates coming from specific links they've posted).