If you can stretch to it, this pen works a lot better than the Coil King I found. Gives better flavour and is just cleaner.

https://recommendedvapesupplies.co.uk/products/lightning-pen

I got one of those recently. It takes a bit of experimenting to get it how you like it. I gave up leaving the concentrate on the dab tool and just stuck it straight on the coil. Found high temp setting the best. Held button down until I could see vapour coming out of the holes, this could take a couple of presses, then went for the straight to lung hit.
The best thing I've tried in it has been the purple punch hash rosin from the Good Stuff which gives loads of vapour and great hit. Crumble and shatter have also been good.

Awesome. I was wondering if just putting it straight on the coil was the way to go. Thank you

Sugar wax/ shatter/ badder all work well for me in the coil kings.

ULC’s sugar wax is the best i’ve tried, leaves very little residue behind. hth.