Uncoupling

I have an OO Gauge Yard layout, with several sidings. Most of the activity that takes place is Light Engine movements and moving wagons from one siding to another. The problem I have is uncoupling the wagon from the loco after the shunt has taken place. This is fiddly and slow. I know there are uncoupling units, but I don't know how affective they are, plus as my track is already layed and ballasted I don't really want to have to rip it up in order to install an uncoupler unit. Are there an

Stuart is referring to what we know as the "Kirby Uncoupler" pioneered by Brain Kirby of this parish. Most of the postings are on the old forum which is not available at the moment, but in summary: It only works with Bachmann small tension locks which have non-ferrous hooks. These are modified by adding a shaped steel staple to the dropper which is then attracted to a magnet under the track. Those of us who came to it late and had fully laid and ballasted track found that large magnets sold