From experience, 31-ft (actually 32) on 218-in wheelbase, we started out with some tail dragging. Now, almost never. Angled approaches and departures almost always keep the rear from dragging. As Bryan said, you just get used to it and work around it
I believe the Weight and Balance issues noted by Gene and Tyrone are far more critical. And I'm not at all convinced the manufacturers set the wheelbase for proper weight distribution. Rather I think they set it to put the wheel wells where they don't compromise the floor plan. On ours, they're under kitchen appliances on one side and bathroom cabinets on the other. Builders want floor plans that will sell and what sells in a longer coach is walk-around rear queen bed, perhaps with a slide. On an "under 30" coach that can be a problem. Under-loaded front axle, over-loaded rear axle, poor handling. Long wheelbase is needed for all these reasons, but it comes at the price of a big turning radius. Like overhang, you get used to it and learn to work with it.