Err No Mate, if you don't feel like you've got full control at slow speeds what makes him think going faster going to cure it?. The first thing the highways agencies do in strong wind is issue speed restrictions particularly on bridges and exposed areas. Bigger bikes are more stable in high winds but believe me, you can still get caught out, watch out on country roads that are protected by hedges, going by an open gateway can lead to you being hit by a strong gusts that will feel like the wheels are being whipped from under you. Top tip ride in your own comfort zone. Stay safe