You dont need to match esters in order to stack, so not sure what all the hub Bub was about regarding propionate and deca, shit thats a tried and true stack. I personally prefer to stack short esters, but I would never say anything is wrong with doing long nd shorts,
Anyhow, to answer your question slice, I personally wouldnt use winstrol and igf alone, I would however do winstrol propionate and igf, and cut the fuck up from that.
As for doing igf alone, during pct, sure it works and I have done it and held gains and thought it helped me stay fuller during pct, but if igf-1 lr3 is a once in a while thing for you, then dont waste it by doing it alone, use it stacked with your cycle, be that a cutting or bulking cycle!
Especially a cutting cycle , as the igf-1 lr3 makes your body use fat for energy!