Hi Kevin,
For what size OTA?
I use LED flat panels for my kit (is that what you mean by a pad?). I have an A3 size panel which covers my C11 ok. I have a smaller Pegasus Astro Flatmaster panel which covers my refractors and is dimmable and USB controllable. There are lots of choices of LED Flat panels out there now.
These look nice: https://www.widescreen-centre.co.uk/aurora-flatfield-panels.html
Cheers
Ian.