No if the glider stays in high tow the entire tow and what is normally done, unlike full scale towing where the glider normally drops into low tow for climb efficiency and the tow pilot does not have to trim exceessive up elevator.

The gliders are far easier to handle in high tow and definately use a topside CG hook on the tow plane. I would also recommend for the glider also to have ailerons, without which at least with two meter or larger gliders severe whipping manges to manifest and lurk around the next circuit. Have tried rudder and elevator only ships and most tows end up wiping so bad that it is difficult to get a lot of altitude because of early releases.

The CG hook also allows the glider to help the tow plane off the water or ground Have done some tow off of water with a powered set of launch floats for the glider that drops off. senario is after the glider reachs around thirty degrees tow angle the addition lift component on the tow plane helps the tow plane up. This was a vital factor in the water tows.

Here is some vidio of the Oxy Moron actually a twin engined Seniorita with quick removable nacelles doing some tows and a photo of the the powered float launch Water Walkers for launching gliders off water:


John


http://video.google.com/videoplay?do...06427302&hl=en