Using the OBJ exporter that comes with Sketchup Pro, click to export (3D model), use OBJ, the click the Options button in the lower right of the export window. A small menu box type thing will appear, which gives you options for exporting. In the Geometry tab, you want "Triangulate all faces" to be the only one checked, in Materials, you'd want to check "Export texture maps," and finally for the Scale tab, you want "Swap YZ coordinates (Y is up)" to be checked and set the units to model units (if you made the model on scale with OoT).