hi  when flying off of a paved runway -i find it very helpful to CA glue the tires to the rims of the tires-this will improve ground handling a good deal-as it eliminates some of the right left movement of the tires- using  landing gear a bit wider than is usual for a given size plane will also improve ground handling a great deal-  i will often  redesign my tailwheel by making it longer-has the effect of slowing down the tailwheels movement as the wheel now has a much greater arch to travel through thus giving you more control and a better feel on the rudder stick and much improved ground handling