Just a quick bug report—if you have multiple tabs open in Drafts (version 42.2.1 (415)) and attempt to hook a link in the pasteboard to one of those tabs, Hookmark seems to always create a link to whatever’s open in the first tab in Drafts.
For example, if I have “Shaggy Mane Ink.pdf” open in DEVONthink and I copy a link to it in Hookmark then switch to Drafts where the first tab contains a draft titled “Pushki” and the second (currently focused) tab contains a draft titled “Wild Mushrooms”, when I attempt to hook to the link in the pasteboard, Hookmark links “Shaggy Mane Ink.pdf” and the “Pushki” draft together.