  Infrared power corrections for Minkowskian QCD observables are analyzed in
the framework of renormalon resummation, motivated by analogy with the skeleton
expansion in QED and the BLM approach. Performing the ``massive gluon''
renormalon integral a renormalization scheme invariant result is obtained.
Various regularizations of the integral are studied. In particular, we compare
the infrared cutoff regularization with the standard principal value Borel sum
and show that they yield equivalent results once power terms are included. As
an example the average thrust < T > in e+e- annihilation is analyzed. We find
that a major part of the discrepancy between the known next-to-leading order
calculation and experiment can be explained by resummation of higher order
perturbative terms. This fact does not preclude the infrared finite coupling
interpretation with a substantial 1/Q power term. Fitting the regularized
perturbative sum plus a 1/Q term to experimental data yields
alpha_s^{MSbar}(M_Z) = 0.110 \pm 0.002.
