depends on your route but Trigony House Hotel,
www.trigonyhotel.co.uk ,about 10 miles north of Dumfries on the A76 is a great stop over point. Used it the last two years as a fisrt night stop for another P forum, this year we used it the first and last night.
The next day you have the choice of the A702 (nice road) or B797 Mennock Pass (superb twisting road through great scenery - used by EVO magazine for their COTY contest). to connect to the M74 and head through Glasgow. The road north along Loch Lomond is good for progress, and if you turn west to Inverary the roads just get better (inverary nice lunch stop too). Go north to pass the old hillclimb at 'rest and be thankful', then plod on to Tyndrum and through Glencoe.
Fort William is a good stop for the night, allowing Loch Ness, Fort Augustus (start of Caledonian Canal)
or Eilean Donan Castle the next day.
If you want twisty roads and great scenery then the WesterRoss Coastal Trail is well worth a trip - a lot is single track but passing place discipline is adhered to by most and progress can be very good.
Allow 2 hours from Eilean Donan Castle to complete the trail, 3 maybe to get to Aultbea, good lunches at Aultbea Hotel.
Try to get as far north as Ullapool if you can - there are some cracking roads up there, either north or east to Inverness. The Seaforth restaurant at the far end of the harbour serve cracking food, queen scallops or lobster soup absolute bargains !!
From there you can either retrace you steps back south, or head across on the A9 toward Perth, soem nice rosds if you head south before Pitlochry to Creiff too, with Knockhill race circuit just south of Creiff.
If you want any more details, or images of the map routes i've used then give me a shout, i'll be more than happy to share them
.
), and the roads were fantastic... fast undulating A-roads and no trees, so you could see the next mile of road laid out waiting ahead 
