First, I applaud you and hope to be out pushing the limits on ATV at 70!! I have no idea of the topography, but I would consider something like a sled to pull behind and take the Moose out in trips the unit can easily pull/handle. Putting weight, especially that which may exceed the limits sets you up for various challenges with top center problems, front end popping up, etc.At 70 years old I've come to the conclusion my co-ordination is not what it used to be. Me and my lil 300 need all the help we can get. I think a set of spacers on the rear wheels "may" offer me better stability. Getting a moose out to my truck last year the rear of the 300 felt like a little more width would help. What do you guys think? If yes, what thickness?