To create the proper tone for an argumentative essay,writers should

Writers shouldn't put the word "I" or put their opinion in an argumentative essay because in this type of essay you have to argue the side with the most evidence.
Of course you have to pick a side to defend and another side to oppose.
Don't forget your rebuttal :p
Hope that helps.

They should focus on the evidence and use opinionated words. As well as a straightforward approach

If the hunter attempts to this he is violating several laws, the most serious would be a federal law that prohibits the interstate transportation of any item that might be contaminated and infested with disease.