On Ddrt? Use a single loop foot lock.
Git up 16' so that you have some line weight below ya, take a loop of climb line with the running end underneath and against your instep. Point your toe up, take a bite of line, then stand down on the loop. Practice will git ya moving pretty quick.
Theres a vid on youtube that demonstrates it.
Handy for short "forgot something in the attic" accents.
Old man was probably talking mid air hip thrust. Try the single loop and then tell him mid air accent aint no sweat.
Secured foot lock, much faster for full ascent. You'll need some good prusic cord.
Careful. Know yer limits... I don't.