Try a set of factory type of replacement shocks on the front and see what it does, surely someone has a set laying around he can try. It may not keep the front end up enough to stay hooked up but at least you'll be able to see if it's wading the tire up as much.
I'd try more air first, it's free. Also how many passes do the slicks have on them? If it's been wading them up for a while the sidewalls may be gone. If he's unwilling or unable to make changes this season he may just have to live with it.
