@khurtwilliams I'm not understanding what you mean by "header link"? I actually do use Post Kinds for checkins. (I think I do remove them from some RSS feeds though so they're not overwhelming.)
Some checkins have an alternate primary kind (food, drink, watches, photos, exercise), so the category link includes a fuller picture of the actual checkin data. You'll also notice some links to post formats in that list as well.
, Feb 01 2018 on twitter.com
Also on: @ChrisAldrich
Sorry if I wasn’t clear. This menu link shows a “checkin” category in the header but the other header menu links, photos, articles, etc. are “post kinds”.
KHÜRT WILLIAMS, Feb 01 2018 on twitter.com