IMO, hovering requires less of a rearward CG than most of the 3D maneuvers. It should be a bit tail-heavy, but it doesn't have to be extreme.

The plane needs lots of elevator and rudder throw. The servos should have enough torque and speed. For a 4 lb profile, standard servos are usually fine, mini's may or may not be enough.

You need power. At least a 1.5 to 1 thrust to weight ratio. The higher the power, the easier it is to get out of trouble. Large diameter, low pitch props are the key. On a .46 two stroke, the prop of choice seems to be the APC 11.5x4, although some people use the 12.25x3.75, 12x4, or 11x4 with good success.

Right thrust seems to help. I'm not sure about down thrust.

The last thing you need is several gallons of fuel.


Good luck,

Leonard
Tyler, TX