Hi ashcossie,
The OW2 is a small speedboat which is rather quick on 2S, flipping a boat this size is no problem, as you've experienced.
Avoiding flips altogether is next to impossible, but you can do a few things that will help:
- make the rudderthrow smaller, this boat should run fine with 25-30° to both sides, more will induce a flip at high speed.
- practice with your boat, I know of no boater that was perfect in controlling a fast electric at speed from day one, it often takes me a few weeks to get to grips with the running attitude of a new model.
Unless you can keep the boat upright in most runs on 2S, I wouldn't advice stepping up to 3S.
I've set-up an OW2 for a friend and even with all my experience as a (RC) raceboat driver, the boat was close to undrivable and every pass ended in a flip, if full throttle was kept on.
Turning at full speed was impossible.
Make sure to tape the hatch, the boat leaks enough as it is...
If you want to go faster, get a bigger boat that can handle more power.
Regards, Jan.