Our pilots who are competent in the K21 have no problem transitioning to
the 102 or the LS4, with a proper briefing. Be sure you are briefed by a
CFIG who flies a CG hook equipped glider on aerotow. The K21s have a CG
hook but it is possible to burn the rope in two by the nosewheel--we tried
it a few times and gave up!


Having flown the 1-34, SGS 2-32, Grob 103 and LS4. I would not think the
2-32 to be a good transition trainer. If your option is the K-21.. then
yes.. a far better choice.

We use our club G103 to transition our pilots to our LS4. The pilots must be
Grob 103 PIC qualified with consistent landings before transition to single
seat glass. We put the single seat glass candidate in the back seat and use
the CG hook. We carefully brief the tendency to "catch the rope twix tire
and pavement" if the nose is allowed to drop once picked up. We have never
burned a rope, but that does not mean we won't.

Slack line recoveries really feel different with the CG hook, and the point
is well made to get the nose pointed at tow before the rope comes taught.
Also pilots are not used to seeing the rope off to the side.. so we go left
and right "across the top of the box" to let them see that.. also dropping
down one side of the "box" to really see the rope impresses the "pay
attention and stay put on tow".

2-33s, 2-32s, 1-34s and even the Grob 103 require the nose to be picked up
early in the take off, counter productive for "tail wheel glass" single
seaters.. the hardest part is getting the new LS pilot to "relax" back
pressure on take off to allow the tail to rise and let the LS "fly off"..
holding the stick back causes the LS to JUMP into the air at too slow a
speed, and then the pilot is PIO to keep from over ballooning while waiting
for the tow to lift off.

BT
CFIG and TOW