Many many years ago, probably late 70s / early 80s, at the height of my Stephen King phase, I read Farris's The Fury. I recall being absolutely blown away - it was like Firestarter, only way better. Which, back then, was big praise. I subsequently read a few more of JF's horror books - Son of the Endless Night and All Heads Turn When The Hunt Rolls By - but they've not left the impression over the subsequent 35 years that The Fury did. I simply don't recall those books or my reaction to them.
Then, spookily, a few Farris books starting appearing in my Amazon recommendations list. These turned out to be early JF crime novels. I did a bit of research and read a few articles and felt it was time to revisit JF.
Alas, Sharp Practice did nothing for me. Put simply, I didn't enjoy it. The form, the construction, (clearly deliberate, but very disjointed), did nothing for me. Characters whom I thought would be main characters came and went (permanently), leaving a very unbalanced feel to the novel. Others appeared midway through the tale and turned out to be main characters. Everyone was "brilliant" -whether at writing, at maths, at music, at art - which felt totally unrealistic. The big final set-piece, although very well written, just didn't didn't ring true. There's no doubting that individual sections were superbly written, but I'm afraid it just didn't hang together for me.
I guess the bottom-line is that I didn't like the form / construction and I was unable to suspend my disbelief, but I did enjoy much of the writing.