Not sure Id agree with you about Jura, Grum, theres some brilliant riding there, way better than Islay (but then maybe im just sick of islay haha). If you take the car right up to Ardlussa you can cycle the last mile or two of road, and then ride the desolate landrover track past Goerge Orwells cottage, past the next house and then up onto the moor for a mile until it gets too boggy, then its a two mile walk to the top end for a view over to Scarba and the corryvreckan. This is an absolutely brilliant day out, took me about 5 hours in total but I wasnt blasting. If you are feeling really really really adventurous and youve got a big enough, slack enough bike with you, you actually can haul your bike to the top of Beinn an Oir and ride all the way to the 3 arch bridge, i did this a few weeks ago (the videos on youtube). The climb is the most heinous ever though, i went from the Islay side up the estate road past the new dam, between the two paps on the islay side and up the fell runners path, nearly blew my lungs out. The top part of the descent was silly, but the bottom two-thirds is brilliant and ive subsequently noticed that if you ride further along the ridge to the north off the summit you can extend the brilliant bit even further. Off-piste downhilling at its very best. Off road stuff on Islay is hard to come by, not enough people go walking here. The American monument on the Oa near Port Ellen is a good view with a circular "track" at the top over some boardwalk, theres some fireroad on the way up there that loops around the new houses. Theres also a couple of secret downhill trails in the woods up there if you can find them, theyre short but really good fun, havent got a clue who built them cough cough (westcoastmassive and 13 yr old son run away to hide).