I have been doing some etching myself. Some G9 sets, Mnats 1176revH, amongst others.
Nothing better than cracking open a beer and watching the tracks appear. Hence the projects I tend to do are ones where the PCB artwork is available. And MASSIVE CHEERS to the guys who put their designs out there to make it possible. True DIY!
I use kinsten products: http://kinsten.com.au/
And I get excellent results. I have tried the iron on printer toner transfer stuff in the past but the results have not been as good as printing onto the polyester artwork base (much darker print than a standard overhead projector sheet) and using the pre sensitized PCB's. I made a light box lined with aluminum foil with a glass top and 2 UV compact fluorescent lamps in it. 14mins exposure is perfect. You don't need a bubble etching tank.... But if you get a styrene box with a lid (like what broccoli is delivered to the supermarket in) and a plastic tub that fits inside. Fill the put a couple of kettles full of hot water into the styrene box, then do the etching in the plastic tub that sits in the hot water. Keep the lid on the styrene box (open to give the tub a shake from time to time and check progress) and the temperature in the box stays nice and warm to help the etching.
Ferric chloride is awful - Messy and I cant see through it. I use the clear stuff. Plus there is neutralizing stuff that make it less toxic for disposal.
1oz copper is fine and there is no need to modify the artwork. Even those three tiny thin traces on the Mnats 1108 PCB turn out fine.
Plus the photosensitive resist that stays on the tracks protects them from corrosion. You don't even need to clean them off.... just solder straight through. But Altronics sell a PCB lacquer which you can solder through if you wanted to scrub the resist off and give them a spray.
Anyway... I didn't really answer the initial question but i have been planning on sharing my adventures in etching for a while. Ill try and take some photos.
(P.S I have no affiliation with Kinsten in case It seems like I am promoting them)