</font><font color="blue" class="small">( There is none so deaf as those who will not hear. )</font>So listen up. The man acknowledges an inherent danger in the action, and has stated clearly that for him the danger does not justify completely curtailing the activity. I would never allow a child on with me. I would also never advise a neighbor/friend against it MORE THAN ONCE. After that they are making a conscious choice, and I can't start limiting their choices without inviting limitations to my own.
</font><font color="blue" class="small">( I repeat, tractors have only one seat for a reason. )</font> Do you really think he didn't read this the first time? If there's a new thought or an addition, fine, but it serves no constructive purpose here to repeat. I personally find it completely within bounds to give someone a "heads up" if I think they are doing/suggesting something dangerous. Once given, respect their personal liberty to make choices.
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Matt--I think you will be highly disappointed if you go to a 5' box blade. Your tractor's weight, HP and overall footprint really point to a 4' box blade. Haven't had a 1220 on the lot, have seen them, have specs, and have sold small diesel tractors x 10 years.