RE: avistar tail dragger?
Yep - it's very do-able and IMO makes it more enjoyable to fly. The only real challenge is getting linkage run for a steerable tail wheel. There's a solid former just ahead of the vertical stab that obstructs a straight control rod. But sharpening a piece of brass tubing and drilling from the rear gets around that. Before removing the tubing, insert a control rod through the tube. Then pull the tube and slide an outer ny-rod housing over the control rod and back through the holes. Then you can connect tail wheel linkage to the rudder servo. The main gear just requires a plywood doubler on the floor of the fuse.