Hi all, this summer I'm going to the French Alps, in an area mostly covered in slate. My V-shaped and Y-shaped pegs hold up fine in the woods and meadows here in Belgium, but I'm pretty sure they would bend or break in rocky underground. Based on other comments, I should probably get me some Ti nails. Which length, diameter, brand, ... would give me the best bang for my buck? First hand experience would be nice but any other kind of hints are also very welcome!