The hand of Tris ?

Thanks to Sean for sending another board from his collection, he says - A Limited Edition thruster from 1984. These were shaped / sold under licence through Tris surfboards. Never seen another one and now I know why, £400 in 1984 ! They certainly live up to their name. Double ' hipped ', channels, 5'11 x 20 x thick. Is that the hand of Tris on the underside ? I take it the 'dish on ' word play refers to the Edition part and predates teen 'text speak' by 20 + years. Owner could not afford the fins.
The face of Tris.