This position is all about figuring out your opponent’s leave: what makes sense? And obviously, judging by the last two moves: not a heck of a lot.
However, when we really examine this position we find one leave that makes sense above all others: FJ- plays at 15k that decided to try to bait out the T last turn so they could set up an unblockable play on row 15. This spot is powerful, and because it’s powerful, your opponent can keep fishing on future turns recursively, even if they don’t have the word yet (for example, keeping FJLD and banking on drawing the E for FJELD later). For this reason, the best play is TROVE 15k, blocking this dangerous recursive spot.