I also have a monopod, which is good for sharp images and shutter speed near/slightly below the safe values, even with very long tele lenses. But it's not useful for long exposures, especially those in the range of seconds.
I've taken hundreds of sharp images with Miggo Splat, which is very useful in many scenarios, for instance when there's no wind and in particular when shooting from the ground. Still yesterday, while it failed most of times, it allowed me to take a few long exposure shots just leaning on a fence with a wide top cover, in a rare moment with no wind.
