I've been asked this one several times over the years. Everything I did on this one, INCLUDING covering film, just like a balsa airplane.

Plans for the Seamaster II can be downloaded from:
https://aerofred.com/details.php?imag...

Equipment used:
Tacon Bigfoot 25 (870kV)
APCE 9x9 propellor
Tomcat Skylord 40A ESC
3S 1800 2200mAh battery
Futaba S3003 aileron servo
Hitec HS85MG elevator and rudder servos
FrSky receiver (at least 4 channels required)
DUBRO hinges, clevises, control horns, and other hardware
Sullivan GoldNRod flexible push rod and sleeve with 256 hardware
Flite Test Foam (Maker Foam)
1" thick pink insulation foam
White Gorilla Glue