Which Clipless pedals?

If people insist on using SPDs wrong then they'll not work.. first: don't use cleats with M-marking (M for multirelease), second: tighten down the tension screw at least a full turn, and third: make sure you have adjusted the angle of the cleat on your shoe so that you don't get to "clip out angle" without wanting to..

I have had 3 unclips i didn't want on my SPDs since starting using them, first was due to a wrongly adjusted cleat + too loose tension on the pedal (at least that's what i suspect), second was because a small stone stuck on the shoe by the cleat had blocked the cleat from being securely locked in, third i don't know, but i changed the pretty worn cleats and have not had problems since..

Skid all the time, run brakeless, and 48x17 gear, about 75 GI.

Thats great, but what shoes and clips are you using?

What I didn't mention is that once I've cycled to work, I walk around all day in them. So my cleats are worn to fuck.
I got some brass, then just cut out the same profile as the eggbeater cleats, they were fucking tight to start with, they have loosened up now.