Presumably you weren't doing them up tight enough?! If you only go with an EBB for chain tensioning you might find it difficult to get the wheel out.
I didn't understand this bit either
- vertical dropouts on a singlespeed is the easiest system imaginable when it comes to removing or refitting a wheel.
Custom frame? - for me it would either be a Phil Wood EBB or Black Cat
swinging dropouts. They look better than Paragons (or similar) IMHO, and I reckon that they'll be the least trouble free of any adjustable dropout system. If I was having a custom frame it would be Black Cat I'd have building it for me. One day - for my 60th birthday maybe, if I'm a good boy
I believe that the only EBB's that don't have enough throw to take up a full link/ 2 pitches are the Phil Wood Half Link EBB (which uses a smaller shell) and the Excentriker and Foward Components EBB converters for standard BB shells.
There are plenty of people (me included) who do use a half-link with a standard EBB, track ends, or sliding dropouts, in order to be able to position the wheel/BB spindle closer to where they want it to be in relation to the rest of the frame and only use the adjustment for final tension.
Personally I use a link-and-a-half and two master links. But don't get me talking about nice singlespeeds or we'll be here all day.......