Sorry no plans but along this thread we are about to build a Cradle for our LM30 so a set of plans or some well dimensioned sketches would be extremely useful
Oh dear looks like no one has such things im still looking I can find a side view but really want a 3 view drawing to help with the model, if you have any luck please let me know as its like no one on here knows where such drawings could be found.
I have something that I think will be helpful to you. Among the papers that came with our boat is an A3 drawing of the LM30 prepared by Scanyachts in November 1981. There are plan and side elevations (including internal arrangements) and four cross sections. The line drawing is very fine. I will get it scanned, but I'm not sure if it will survive being reduced to 1mb per image. If not, we will work out another way to get you a copy.