You can draw arrow call outs "leader" with the dimension tool and leave the text "blank"
[AFTER you draw the leader arrow and the text box appears just CLICK OK].
I used this earlier to label a tiny rebate that was less than 2mm to draw attention to the
Design detail for a fabricator..

Tip:
1. Try/consider using LEADER arrow and "abc" text separately. It seems really flexible!
You can also put more points than needed on the arrow part then later "show points"
to give even more flexibility on the arrow direction and placement.

UPDATE:
2. Create presets for different arrow types.
>> Options/Dimensions/Property Presets & "ADD"
Focus on the arrow section..and "ADD" preset.

Then when you draw leader arrows and RIGHT CLICK you can see the presets
and swap them about at a click.

I'm not sure this is it's full intended use but it's rather flexible. If you leave text
out and have extra control points shown then the 'arrow' is effectively totally separate
(and sizeable or pivotable in lots of directions). Text can be added at any time
through 'leader details' or via separate "abc" text tool.