A shot near the far side of the table can tempt you into balancing on one foot and stretching until the cue barely reaches your bridge hand. Even before the stroke starts, you have given yourself several things to control. The mechanical bridge exists for this situation.
Ask the venue which rest is available and how it should be used on that table. Different heads provide different cue heights. Choose a support that gives the cue a clear path without unnecessarily lifting the butt or bringing the rest into contact with another ball.
Place the support before aiming the stroke
Set the bridge head gently on the cloth, leaving enough room behind the cue ball for a short, controlled movement. Hold the rest steady with the non-shooting hand. The shooting hand then moves the cue along its support; the bridge itself should not travel forward with the stroke.
Start with an easy practice shot, with permission to practise on the table. A straight, short pot lets you learn the unfamiliar view and grip without also solving a difficult position route. Make a few small practice strokes to check that the cue moves freely and that your hand does not pull it sideways.
Choose a simpler result while learning
A mechanical bridge is not an invitation to attempt a powerful shot or extreme spin before you can deliver the cue smoothly. Reduce the demands of the shot where the game allows. Ask an instructor to check your grip if the cue tip keeps rising or wandering during the final movement.
After the cue ball has gone, lift the equipment away carefully without sweeping it across the layout. Stay aware of nearby balls and the cloth. Competition rules about supported equipment and body position should be checked with the organiser; comfort alone does not determine legality.
Using the rest early also makes the choice less conspicuous. It becomes a normal piece of equipment, selected because it gives you a steadier stroke, rather than a last resort after an uncomfortable reach has already failed.