For Mull, with full tanks, in an R44, you can proceed North up over Morven towards Ft William, Ben Nevis (views of) then along the loch (Eil) west to the head of Loch Sheil (Harry Potter Viaduct in the background, here be Dementors..) then west to the coast and sandy beaches South of Mallaig. The North along the coast to the Kyle of Lochalsh and Syke to the West, then up as far as Stornaway VOR, then South along the outer Hebrides over BEN VOR, to Barra, then Eastbound into Tiree TIR VOR, then over Colonsay and into Mull the back way through the gap to land or straight onto Oban for 100LL and JDs.
The above, E&OE subject to weather, wind, vis and all things metrological, but a nice flight out from the GFH
(and much more fun than spending the weekend flogging a jetbox round 10min circuits in Lincolnshire 
)