Hey Andy,
I was in the same situation you are in about 2 years ago, and all I can say is you have to give it time... At first, I was getting 2-3 submissions a day, and now it is up to 20-30 (not like the big boys, but a big improvement for me!)
Anyway, I'd be glad to trade submit page links with you if you'd like... My submit URL is
http://www.adult-sex-sites.net/form.html
Let me know
