Hello Nick, if you have already looked at the Colin Archer posts, then you will have found my ten-mile-long build log.
The kit manufacturer Billing Boats have been taken over by new owners who may eventually update the plans for their older models. In the meantime the plan for the RC 'setup' is a very pretty basic diagram.
If you google 'billingboats.dk' , then write Colin Archer in the top right corner of the home page, you will find all the drawings for the 1:15 scale versions as well as the smaller one. If you scroll through all the drawings, the R/C installation drawings will appear. There's one plan view and on side view.
If you are interested in what I did and/or what I now think is an adequate installation, then just post your question/s on the forum. I am not building anything at the moment and only 'look in' about once a week but I'll check each day during the next week in case you have a question.
George