Sail into is a phrase that is commonly used to describe the act of moving towards something in a confident or determined manner. However, there are a variety of different synonyms that can be used instead of "sail into". Some examples include "plunge into", "descend upon", "charge towards", "rush in", or simply "approach with confidence". Using these alternatives can help to add variety and depth to your writing, and can also help to convey different nuances depending on the specific context in which they are used. Ultimately, the choice of synonym will depend on the tone and meaning you wish to convey, as well as the overall flow and pacing of your writing.