"In Search of the Ten-Square" in the November 1990 Word Ways featured in a manually-constructed square with reasonable 10-letter terms in every position. The ASTRALISED 10-square is arguably the finest of its type so Spooner, an interesting variation of this square is possible.
"A Spooner-Assisted Ten-Square,"
Word Ways: Vol. 28
, Article 6.
Available at: https://digitalcommons.butler.edu/wordways/vol28/iss4/6