Changing Oil
Changing the oil (and filter)once a year should not be viewed as either an onerous or difficult task (considering all the other routine maintenance tasks owning a sailboat involves). On my boat, it involves slipping a tube connected to an electric pump into the engine sump, hitting start, and the oil is out in a few seconds. Changing the filter and putting in new oil involves a few more minutes. Fun? Nope. And it can be messy if you are not careful. If it's more difficult than this on your boat, perhaps some more info would help produce some useful hints for you to make this job easier than it is.