I as well like the balance of a IV especially going down steep hills and in the water. I fish two big adults out of the front seat. I've got to believe that's why they stacked the motor and tranny. I also like the fact all the noise and heat is behind me. Also like that all the chains are driven from the back which allows the use of idler sprockets on top instead of sliders on the bottom. But like Noel says the primary chains and trans are buried. The long sloppy shift linkage is a factor as well. Pros and cons to everything. Different strokes for different folks.
What it lacks in ground clearance it makes up for with traction.