I would definitely support WD in saying that it's worth visiting Raasay -- for more than just a few hours.

There used to be a Youth Hostel on Raasay, and I spent three nights there in 1986. On one day I cycled north to the end of the road, left my bike leaning against a tree, and walked to the north end of the island. The tide was low, so I walked over the wet rocks to Eilean Tigh and up to the top of that islet. When I arrived back to my bike, there was an elderly man standing near, and we spent a while chatting. I remember him telling me about working as a lighthouse-keeper, and much else, but I don't think he said anything about road-building. The previous evening I had heard the Youth Hostel warden talking about the man who built the road, but it wasn't until some time later that I realised that I had been talking to the legendary Calum MacLeod.

The weather was bright and clear, with the occasional passing shower, all the time I was on Raasay. It had cleared up shortly before I had arrived at the Sconser ferry terminal after a morning of rain and wind. After I left Raasay, it closed in again as soon as I arrived back on Skye. In four days on Skye, the cloud base hardly lifted above about 500 feet; on one day, it was at sea level. On another day, it became impossible to make forward progress on my bike due to the wind. This was in May, which is supposed to have the best weather on Skye.

I haven't been back to Skye.