hi and welcome!!! I know what you mean about the thin coarse hair... my Gracie has it too...

my vet gave me this spray stuff that has really helped with her coat... but as far as getting it thicker... no luck..

the stuff that she gave me is called Humilac by Virbac it says its for dry skin but she said that it will make her hair more silky... I have noticed a diff. but I think it kind of stinks... good luck!