@meerblau Sure! The key to get these specific things, like only founds with a specific attribute, is to add a custom filter. It's a paid member feature. The filter is found here:
https://project-gc.com/User/CustomFilters There's an old video that shows how to use it, it's a bit older so the look of some things have changed but it's similar enough that you can figure it out I think:
https://youtu.be/nMTwBb9Q72I
So, to figure out what T5s kenneth9 has logged that has the attribute "Climbing gear required" I used
https://project-gc.com/Tools/MapCompare with kenneth9 in the profile name, no cache location, checked the box for "One found", used the filter "Difficulty/Terrain" and selected Terrain 5.0, used the filter "Show Disabled/Archived" and clicked both boxes and used the "Custom Filters" where I selected the filter that I made that had the attribute "Climbing Gear required" as a required attribute. :)