I was wondering if anyone knew of any fiberglass tonnue covers that fit over the plastic rails on a flareside that are low rise?

 

The Snuglid hard tonneau is what you need...it is low profile, completely covers the rails and the paint matches OEM perfectly. I paid about $600 for mine here in California. It's two years old now and no problems at all with it. I get compliments on it all the time (some folks think it is a factory option with the Flareside!).

 

i have an ARE lid myself. it was $900, but you can unlock it using your factory remote, which is very nice if you have a kid hanging onto your ankle and bags in your arms.

 

I have the snuglid that fits over the plastic rails you can't even see the plastic rails...it fit's like it's (oem)...you should check out there web sight..it has a nice low profile and locks on both sides and you can have the option to have the inside with carpet...