Logo on wool blanket question

Happy to hear it worked out!!
Solvy makes such a difference. It really helps out on such a wide variety of garments.

If the logo / art is in one joined up piece, try laying down a criss cross pattern under the artwork. This will hold the "hairy bits" down and stiffen the area to give a more stable area to embroider on. If the entire area can be done this way with a thread the same colour as the blanket then even better. And do as Bruce suggested as well.
I often do this with wooly beanies as well.

Another technique I use is that if the design is one joined up piece, I put light tearaway backing before you do criss cross pattern and tear it off right after the first criss cross pattern stitching. Works better than solvy and cheaper(use white tearaway backing for lighter color and black for darker color). Don't have to worry about solvy residuals.

I would agree double up your underlay and def. use solvy. In most cases solvy alone should work. I have used it from thick fleece to really loose knit hats and always does the trick.

What I do is use a double zig zag for underlay fairly dense on columns. On large areas I use a really dense tatami underlay, I never increase my top stitch density, use the underlay to do the job.

Solvy should definetely help but you probably need extra underlay(I mean heavy underlay). Also, instead of 75/11, use 80/12 needle. I use 80/12 on fleece, towels, beanies, and other materials where stitching gets lost. Send me your embroidery file. I will take a look.
bruce@dbpromoscorp.com