The truth is McT's V Bottom (yes, which I maintain was well after Midget's & confirmed by GG) was a very different design from what Farrelly made.They were also known as 'Trackers', which I personally experienced while nearly taking off my then girfriend's head. Watch the footage of Nat Young at the Bay circa '67 to see the struggles he was experiencing. Here's McT at Sunset, looks to me like he's riding mid-board.
View attachment 45949
View attachment 45950
McT's had vee all the way thru the board also a bunch of concave. Midget's had single concave versus McT's deepish double spine down the center kind of configuration. Midget's was 8 ft by about 22" & stringer less. He designed a big hatchet cutaway fin to "promote drift".
Midget admittedly, only made the one board. G&S picked it up and made a model out of it & sold thousands to the East Coast. They worked particularly well in small Florida surf. McTavish deserves the credit for popularizing the design more than Midget ever did........ a lot of guys moved on very quickly to Brewer inspired Baby Gun Mini Pintails......... a lot of those around 8'6"...... still considered "short" from what we had been riding.