No, not generally. The definitions call the Roll Cast “an Anchored Cast without a substantial change of direction”. A small correction is within its range; for a real change of direction it is the wrong tool, and the longer the line the harder the turn gets.

The reason is the 180 Degree Principle for anchored casts. The D Loop is the only part you can energize and the anchor holds the rest, so swinging the D Loop off the target line breaks the lateral alignment of anchor, D Loop and delivery. The delivery is then more likely to cross the anchor and collide.

How far a roll cast can actually turn is not a fixed angle: it depends on how much line you carry, how well the anchor holds, and how cleanly that much line turns over. A short line with a tight loop will turn further than a long one. Treat any degree figure you are given as that caster’s working limit at that length, not a universal one.

When you genuinely need to change direction, use a cast built for it: a change of direction is what makes a Spey cast a Spey cast.

Source

From the CI Study Guide (2025) (PDF), Task 18; terms from the FFI Fly Casting Definitions (Roll Cast, Spey Cast).