While the above info is very true and very informative, a full floating axle is not necessary for what the OP is towing on a part time, weekend warrior basis, period.
Otherwise absolutely correct in what makes a HD pickup stronger than a half ton.
That said, the strength, frame stiffness, braking capacity and towing capacity, with the exception of axles (which have remained largely unchanged for decades now) of todays crop of 1500 trucks is way better than years past. Regarding axles, the Ram 1500 I believe still has the same corporate 9.25" axle that has been in use almost exclusively since the 60s? Coincidentally, or maybe not, it's the same size R&P as the AAM front axles under the HD trucks. Yes I understand the inherent limitations of a semi floating axle, but it doent mean they are incapable of hauling a load.
What is necessary, or at least recommended, to improve the handling of his rig is some good stiff tires (LT) and stiffening up the suspension a bit.
I've torture tested enough 1/2 ton trucks either at work or personal use to stand by the claim that you can throw a ton in or on the back of a 150/1500 truck, GM, FOrd, Dodge, Yota and if you drive it till the wheels literally fall off (broken axle), you will be driving a VERY VERY long time.
