Hi Andy,
Have you discussed your searching difficulties with your assigned trail blazer? You may also like to discuss with them the option of working on some of your own family in the required time periods.
Learning the ways of Wikitree can take some time, which is why many of the projects have started introductory activities like the Orphan Trail. We want people to have fun at the same time as doing good genealogy! Once you've completed the trail you will have all the skills of searching, sourcing and creating great biographies at your fingertips. However it is important you communicate with your Trail Blazer.
All the best,
Elizabeth :-)