Last post-- you raise some good points. It is certainly true that the phugoid may either diverge into increasing highs and lows, or damp out into decreasing highs and lows, depending on the glider and the CG position. I'm a light guy and so my CG is usually well aft, making the dynamics on the lively side. Even if the CG is well forward, I think that some mild forward pressure on the stick at this particular point in the oscillation would help the situation.

Thanks for chiming in.

S