In his quest to find the Magic Whatsit, Derek has become lost at sea! What next? See the full story in Goof! No.6.
You can subscribe to Goof! at £12 for 12 monthly issues, and as back issues are always available you'll have access to all of those straight away too.
Full details at the Goof! website:
If you're interested in Derek the Troll's earlier adventures, the complete collection is available from me in print, directly from my website here. 32 pages on quality paper. Also includes the Complete Rock Solid, Space Hero in the second half of the comic.: