By now you should have v3.0 of the hunt sign up and visible at your location (if not you'll have had a notecard about this from Zardia). You'll have noticed, with this version of the sign, there's some hover text over the sample shoe that lives on the sign -- this is where your hunt hint will go.
At some point soon you'll be wanting to set your hint. What you set it to is, of course, up to you. You can make it nice and easy, or you can make it rather tricky. It really depends on just how hard you want to make it for the hunters who come to your location. No matter what you decide to do in that regard, you'll need to set the hint so that it shows on the board -- here's how to do it (please note that all instructions and illustrations are written with a 1.23 style viewer in mind -- in this case they were done with Phoenix; there will be differences if you are using Viewer 2.x):
Right click on the sign and select "Edit" from the menu. This will give you the usual edit dialog:
Now select the content tab in the edit dialog. You'll get a list of all the items that live inside the sign:
At the top of the list you should see a notecard called Hint. Double-click on this to open it so you can edit it:
At this point you want to delete the text that's in there (by default it says "All will be revealed by April 15th") and replace it with your hint. Please note that the hint can be multiple lines so, if you really do feel the urge to pen a poem or something similar, you can -- we'd advise not making the hint too long though.
Once you've made your change hit the Save button.
Once saved you can close the notecard. When you do you should find that the text you wrote in the notecard is now hovering above the shoe that is on the face of the sign.
Congratulations: the hint is set.