Have a Stratos 21 extreme, with a 250 Evinrude DI. I've been running a 26 razor straight since last year and it seemed to do well for me.
In the last few weeks, I'd went from 27 to 31 in my battery. Filled up my gas tank all the way, had full livewells, and the boat was drenched. It took a long time for me to get up on plane. Eventually I got up and took off, but no hole shot at all.
Right now I have the medium-sized PVS plugs on the prop, maybe I should switch it out to the large size?