"To make this decision, I need to have complete confidence in the repairs, modifications and replacements to Kiwi Spirit," he said in a blog yesterday.
"We have in this past year gained a great deal of experience that will help us enhance performance and increase safety.
"It would be a pity to waste this learning, but I shall remain cautious and delay a final decision until I am completely satisfied on all counts."
In the meantime, he said he would proceed as though he would restart in late November this year, from St Augustine, Florida.
He expects to arrive in Cape Town early next week, where he will be met by wife Catherine, and one of the builders of his boat from Lyman Morse.
He said repairs would be made to Kiwi Spirit before a crew sailed her to Antigua, and eventually Maine, United States, where she will be fully repaired.
"By the time Kiwi Spirit arrives in Maine, much consultation and planning will have taken place, so that we get it right.
"I will be responsible for this. I suspect I can now consider myself an experienced solo sailor, having logged some 62 solo days at sea by the time I reach Cape Town - 48 since the departure from St Augustine.
"Experience should never be wasted."