What cell plan works for zoom along the eastern seaboard?

[LeaS]

I am new boat owner with the plan to sail New England waters this summer and begin my journey south in October along the coast. I have a coaching business and meet weekly with my clients via zoom. The plan is to have flexibility to anchor away from marinas and still meet with clients based upon cell tower access. Currently using Visible and getting disrupted signal in a populated area. What has worked well for you and in what areas? Are there extenders I should add or antenna on the mast for reception? Sailing a 33’ Tartan single hull.