Solar cooking is slow, does the solar cookers you are looking at get water hot enough to boil in a realistic timeframe, if at all?

I like playing with solar stuff, but I would think a wood fired water boiler would work better, be more reliable, work all times of the day or night, be easier to pack (less space) and without question get the water hot enough.


Solar is fun to play with, but when it hits the fan, I want my Thermette for water boiling.