Works best if you duplicate the track, apply PaulStretch to the duplicate, then replace the start with the start of the original (and crossfade between the start and the processed sound).
In this “before / after” example, I’ve retained the start and the end of the original, and spliced in a “PaulStretch” stretched middle. PaulStretch does change the character of the sound a bit, but it’s probably the closest to “automatic” extreme stretching. (I also applied some compression after PaulStretch so as to avoid the level modulating too much).