OK folks, as Scoosh says if your coming by car I recommend that you park at the top end of the Adsa car park on the Dunkeld road, as these spaces are rarely if ever used and no jobsworth is going to slap a ticket on you. Using my artistic skills I have created you this handy map....
I will be at the Asda car park for 10 to meet those coming by car, as I've got to come this way from chateau TechMech. Then we'll head down to the start of the North Inch next to Perth Bridge for around 10:30. Those coming by train should cycle directly east and then directly north and meet at the same place on the North Inch. Here's another handy map to show everyone the way....
With these handy maps i'm really spoiling you

But if you should still get lost on the way I'll PM everyone my mobile number.