In 25-38 knots using a 6.2m is not a good idea for me anyway - especially for gybing!
Can just about hang on to a 5.5m in 25-30 knots. Above 30 knots I start heading upwind.
In 25-38 knots I'd use my Gaastra Vapor 5m with my 87 Sonic and Vector 30 EX fin.
That fin / board combo sucks the board to the water like no other!
Find using my 5m in those crazy winds to be much less tiring and more enjoyable than my 5.5m.
And I don't end up a km or so upwind when the squalls / gusts come in