When towing from a hook there are stresses imposed that the hook and/or frame are not always designed to take...
...not always, though in this case do we know the particulars of the hook STC.. ?
...With its tall mast and teetering head the R22 falls more into the latter category...
Personly ah thinks the R22 is a danger just sitting on the ground, let alone actualy flying one - though each to his own..
(note - I fly other brands of heli)
The other safety feature of pulling from the bottom of a long line (50 - 100ft) is to safeguard the tail rotor should the skier let go of the tow rope...
Use a shorter rope and fly faster....
