if you were joining the circuit correctly,you should cross the upwind numbers at 90 degrees to the runway,having entered the zone at 1100', traffic in the circuit will have climbed out to 5-600' before turning left 90 degrees, climbing crosswind, to turn downwind at 1100' , therefore joining traffic will see circuit traffic at the same level, either left, right, or ahead of him, an error is for circuit training traffic to fly the climbing crosswind leg paralleling the coast. if you are coming from the west,at some point, say, littlehampton, well west of worthing, you should discontinue keeping the coast on your left, and position your aircraft so you join crosswind over the numbers,at 1100', nowhere near the crosswind climb out track of circuit traffic
