Hi Daniel,
Yes, I do use K2 custom fields.
For me it is not a problem to create new items "events"
The problem is, the site is open to anyone to submit new "events" in K2.
They have no experience in Joomla let alone K2.
In K2, the editor is a bit unuser friendly.
Title, for event in one place.
Date, used to set the event start and unpublish date in another.
Then the map is below the content editors, so easily missed and K2 extra fields are in another tab.
Like I said, I have made a custom itemform.php, hidden standard K2 fields that the user does not need to complete, such as title alias and featured etc.
My layout moved the map from below the content editors into its own tab, but this meant that the address was added in the map, whilst K2 extra fields were used to collect extra event details.
Although this was an improvement, the downside was the map did not function quite correctly in the fronted, whilst backend was fine.
For me, it is all about trying to make item submissions as clean and simple for contributors, that really have no web experience at all.
I even went to lengths of adding onhover tooltips to explain exactly what was needed in each field, but even that does not help stubborn users.
So I thought, why not remove all K2 extra fields and use the Hotspot custom fields. Now I know how this works, I know it cant be done.
I have a plan to redesign the form again, to make it super clean and simple. So I will ping over some screenshots when it is done.