I've done that portage - not into wicksteed creek, but further east on the river, from the river to the lake - a rough estimate per the OBM was point one six mile so about 1/6th mi . 

I was going upstream, and it is hard to find that way, as you go past it and would have to be looking over your right shoulder to see it, as its back in a little bay.   After I was certain I'd passed it, I backtracked and found it - even then, I don't think it was really obvious.

I'd say that at the river end, its just about where the Ontario Basic Mapping shows it to be. I don't remember if its on the Fisher map, or not?  Tried to do a copy/paste of the OBM for you, but can't make that work.  Likely its the same as PCD as that uses OBM data?

I did it in 2009, so my memory is more or less blank, but I don't recall any difficulties on it.