Sometimes the best play is to put no more money in with pure garbage and move on.
On Ah‑Qh‑6h we’re utterly crushed: BU has all the suited hearts, plenty of Ax/Qx, and we have no heart, no pair, no backdoor straight potential. Checking and giving up is standard; betting here would just be lighting money on fire with one of the worst possible combos.
The Js turn improves BU more often than us (KJ, JT, hearts with a J, etc.), and 8‑3 still has nothing and no relevant blockers. Keeping the pot tiny with another check is exactly what we want with the absolute bottom of range on a board that smashes villain.
River 7s completes more draws and we’re sitting there with 8‑high, no hearts, no straight, no useful blockers to spades or top‑pair+. Turning this into a bluff would be hopeful and unnecessary; checking, losing small when beat, and not torching stacks is the right conclusion.