I looked into state of art of comms last year. My conclusion: reliable, affordable data comms are reliable on cell, and there will be gaps that could be sizeable depending on your location. OP mentions $2k/mo for
satellite. I found nothing even close - if it were, there would be a helluva lot more people cruising right now.
Location matters. Last year, I did several longish trips, a few in
Florida (St Pete to
Dry Tortugas, and another through Okeechobee, and north to Cedar Key). In
Florida, occasional hit dead zones, rarely for more than an hour or so. Exception was
Dry Tortugas where there wasn't even
VHF weather.
But, I also did a trip from
San Francisco to Ensenada (70 nms south of San Diego) and had no
cell phone reception for much of the trip.
Wifi at
marinas in Ensenada (and many marinas) famously sketchy even with
wifi extenders. I found tethering via Verizon, which works well in
Yucatan, was not reliable in this part of
Baja. A
Mexico phone direct from Telcel might
work better. Not sure
Google Fi would be an improvement over Verizon -
Google Fi relies on T-mobile for carrier relationships. I carried Verizon and T-mobile side by side for a month in the
Yucatan 1-1/2 years ago and found Verizon to have consistently better
service and fewer dropped calls. But who knows
current state of art
Right now, my observation is that unless you have the
budget and space for
satellite equipment or your cruising grounds are populated areas with quality cell
service, your best option will likely be to adjust your trading approach to allow for at least a couple days of sketchy comms.
Please report back - while my
research of last year was not for near real time requirements of day trading, would be very interested to know what your
research turns up
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