RE: Why no Tufskin Apollo?
I share your interest in durable formula boards. My F158 has a ton of little repairs, and the wood finish on the belly has started to get exposed and split, requiring me to sand and repaint. Ugh.
Anyway, what I wanted to say is this: "Why get an apollo or FE160 when you already have a F-type 148?" I think the difference in early planing will be very slight- perhaps less than you could get by using an 11 m sail and 70 cm fin on the 148. If conditions are too light and gusty for the 148, then I think you would have more fun and less frustration by using a high-performance longboard or hybrid.
That's my 2 cents.