I caught many 10 to 50 lb tunas trawling, at 4 to 7 knots a 5 to 10" "Malboro" RAPALA.
We call it Malboro as it is a red headed and white body lure.
The brand is RAPALA : A rigid plastic lure with a
stainless steel lip which vibrates and shines in the
water, even under moon light.
I caught Tunas in the western and southern Med, only in deep waters.
e.g; 20 miles south of St Tropez, 20 miles west of
Corsica, between the Balearic islands and Marseille, around the Stromboly, East of Syracuse., South and west of
Malta, South of Santorin...
but I never caught anything in the
ionian ,
Adriatic, or Aegean sees.
Nor in shalow waters e.g. not in the less tha 100m deep straight between
Sicily and
Malta
My trawling gear consists of 3 meters of bungee, a small bell , 10 meters of easily seen and handled 4 to 6 mm
rope + 300 lb ball swivel + 10 meters of 200 lb nylon + 30 cm of 100lb
steel + Rapala;
No rod, no reel, no lengthy & fragile 50lb line .Tuna hoisted aboard by hand without needing to slow down ( except for the bigger ones).
Good luck
Keep us posted on your success