As long as you keep this golden rule
in mind, you will be happy.
Houses, cabins, rural off grid homes, Solar
should be purchased with $ per watt in mind.
Boats with structural $ to spend on solar arrays, shading issues etc, should go for WATTS per SQUARE FOOT as the primary factor.
It costs a significant amount of your solar budget
to mount those babies!
Not to mention all the weight in undesireable places (high and aft is always best).
Imho, the next important factor should be $ per amp saving.
Make your boat not need amps in the first place!
We have 320 watts worth of solar and are energy independent +++.
This includes watermaker
, gps chartplotter
, big inverter
, sewing machine
, computer, long distance wifi
ad nauseum, and yes, two Aurinco walkable flexible panels
on our amas and a 120 rigid on an arch with a mppt