I'm a bow hunter, which DMT stones could you recommend to me to use to sharpen my broadheads?

We would recommend one of our double sided DiaFolds.

If the blade is in decent shape, the ExtraFine/Fine version should be good.

If they are in pretty rough shape I would recommend the Fine/Coarse

If you have a wide range of issues, I would recommend both a ExtraExtraFine/ExtraFine + Fine/Coarse.

https://www.sharpeningsupplies.com/DMT-Double-Sided-Diafold-P12C7.aspx

There are a ton of different broad head designs out there. Some require you to dissemble it first.

Here is an funny review/instructional video of our Diafold and how to use it.

https://www.youtube.com/watch?v=SBHAYvg7suo