Just my two cents...
I recently finished an acrylic sweater, and I had read all kinds of mixed reviews about blocking acrylic yarn. I tried blocking the pieces (just by dampening and pinning), but it didn't help much. Of course, it turned out okay after I seamed it. As for your scarf, I don't know. Maybe with some wool in it, the wet blocking will work for you. I have read about some people blocking very lightly with steam on acrylic, but I'm not sure I would want to try it. :thinking: Good luck!
Only a life lived for others is worth living.
- Albert Einstein