Plan Ahead: Don't start caulking at a random corner or end point. Plan ahead to anticipate what your position will be as you move along the joint. For an enclosed tub ... drop-off in the caulk ...

Unlike an alcove tub, drop-in tubs don’t have shower heads or water-resistant walls. A bathroom with a drop-in tub almost always has a separate shower. Some people refer to drop-ins as soaking tubs.