Hello Lynn,
The settlers who arrived on the Haidee in 1850 had to complete emigration forms which were counter-signed by, say, the local minister.  The forms were submitted to the Land Commission who then approved (or not) the application.  I know that the Haidee Settler emigration forms are lodged with the Deeds Office in Pietermaritzburg.  As I recall, tracking down the forms was not an easy task (i.e. not solved by sending an email to the Deeds Office).  I recommend you contact Shelagh O'Byrne Spencer and ask her whether your Wood family completed such a form.  If so, then you would need to engage the services of a researcher and ask them to visit the Deeds Office.
Regards,
Pat