Well, I'll tell ya. Ive hauled a lot of rounds out of the woods with my Honda Rancher! Several hundred cord over the past 18 years! 30°- 40° incline is a pretty steep grade IMOP! Power won't be the issue. Its getting the power to the ground and not tearing up your haul trails is the issue. Im not exactly sure what you mean by "very rough" bouldery stumpy and rooted up ground. Ive towed many a OVERLOAD down somewhat steeper terrain. Going up when OVERLOADED is a different story! Some of the ground Ive hauled was to steep to stop once I started down the hill. Once I broke the crest headed down. I was committed. Need to make sure you have a good safe trail if you don't have the ability to stop. If you break traction when going up steeper grade. Your going to have two choices "if" the quad dosent start sliding backwards out of control even with the breaks locked up on all fours. (Witch can be very dangerous!) Your going to either have to lighten your OVERLOAD, or off load it completely, turn around at the top of the hill, reOVERLOAD on your way back down and start over. If you do start sliding backwards? You have two options. Bail, or try ridding it out! I suggest BAILING! Like I said. I've been wheeler logging firewood fir a long time. I know the limits of a four wheeler on steeper grade. Traction and momentum is key! If you can't get the power to the ground. It doesn't matter if you have 10hp or 1000hp. That's all I can really tell ya on my end bud. The Honda 420 Rancher is a proven, reliable and tough machine! Check out the "War Wagon Chronicles" thread fir more pictures of being properly "OVERLOADED" and remember,...
View attachment 1046453View attachment 1046454 ...You ain't loaded unless you're "OVERLOADED!!!"