Looking for some advice/ assistance. I have a Furuno 1610C plotter - very old school - and am trying to get hold of a chart card for the gold coast area. I have a Navionics Microchart card for it - but it is the wrong area. I have been searching the web and ebay (to no avail) and want to know if:
1. Anybody has an old card (either navionics or furuno) for this area that they want to get rid of (it would appear that these are as rare as hen's teeth)
2. Does anyone know of any way to rewrite my existing card with the area I am after.

Before it is suggested - upgrading the plotter is not an option at the moment (unless my Lotto numbers come up . I realise that any chart I can get hold of now will be at least 10 years out of date - but I am pretty sure that the Broadwater and the Seaway are still in the same place.... so currency of the chart is not a major concern.

Any assiatnce/ advice you can provide is appreciated.