How to collect fresh rainwater on a boat

One of the major advantages to living in a tropical area that receives heavy rain is that we often don’t need to use our watermaker to fill our tanks! However, harnessing rainwater and funnelling it into your tanks is actually harder than it sounds. Simply leaving the plug open and hoping for the best will not do. After much trial and error, we finally worked out a frankly ingenious way of making the most of every downpour and filling our tanks with fresh rainwater, and now we’d like to share that with you!