“building boats from glen-l plans is simple and straight forward…i honestly have never run into a problem, unless it was of my own making. follow glen-l’s plans and you can’t go wrong.”. Offshore catamaran. dd paper jet 14. the optimist dinghy. please take a look at some of the work we have done in previous projects.from the restoration of a ‘tumlaren’ called "astra" to a new construction of a 38ft motor-sailer/power boat.. Vintage balsa wood airplane car train model kits sales list.