Tow plane types/mods for high density altitude glider towing

I've seen a tow behind a Pilatus Turboporter at Gap Tallard

At 04:14 13 August 2019, wrote:
Dennis Tito tows with a turbine Cessna 206 or 207. Perlan is using a
turbi=
ne Grob. I have towed behind a turbine Ag Cat. Agree on the
=E2=80=9Cbein=
g dragged skyward=E2=80=9D comment. Was at 2K agl at the end of the
runway=
..

I Have towed a loaded SGS 2-32 and loaded Janus out of Aspen, CO dozens
of
=
times with a 180 Cub. Not recommended.....

The 260 and 235 Pawnee, C-188, or big engine 182, 180, 185 have all
worked
=
well at Ely and Parowan and other high desert sites for decades.

At 08:07 13 August 2019, Peter F wrote:
I've seen a tow behind a Pilatus Turboporter at Gap Tallard

I've *had* a tow behind a Pilatus at Gap-Tallard. My pupil had no trouble
flying the 2-seat glider ... but the Pilatus pilot (disappointingly?) used

significantly reduced power!