I-177, proposed trapping ban

The media tells us that anti activists have gathered enough signatures to put I-177 on the November ballot, to ban trapping on public lands.

Isn’t this proposed law unconstitutional under the right to hunt, fish and trap that MSSA got into the Montana Constitution?

Yes.  See my comment for the record last September to MT DoJ about I-177 at:
http://www.progunleaders.org/Trapping/

However, the rules are that an initiative cannot be challenged for constitutionality until and unless it is approved by the voters and becomes law.  Until that occurs, you may spread the word that, among other serious problems, I-177 is a waste of effort and taxpayer resources because IF Montana courts follow the law I-177 will eventually be stricken as in violation of the Montana Constitution.