Hawaii Volcanoes Vacation?

It's about 10 degrees F outside, so it's about time for a Hawaiian geology vacation fantasy. Actually, I've never been there, and would like to start saving towards such a trip.

As I understand it, tourists aren't allowed to wander by themselves out into the Kilauea active area--that is reasonable. However, is there *any way* to get even within viewing distance of the active area? Air? Land? Sea? It would seem a waste to spend multiple thousands of dollars and only get the same remote picture postcard I could get from here in Frostbite Falls. I don't need to melt my shoes in lava, just as reasonably close as say, to the geysers in Yellowstone.

Major destination would be the Big Island, including lava tube areas. Any recommendation for other island(s) which are geologically/biologically interesting? Am also interested in seeing the olivine sands, but what I know about Hawaii will fill a 5 minute lecture. Not interested in the 'high life'-- would rather stay at a cheap motel, and travel by ourselves, though would be open to organized tours, if they can get us where unchaperoned tourists aren't allowed.

Ok, let the mental luau begin!
Jo
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