The failure point is the oil lines about 90% of the time. I guess there are other failure points, but you never hear about them. So, I'd say there are 2 ways to make the system safer:
1. Replace old worn, or brittle oil lines with new ones.
2. Make sure the lines are securely attached. Inspect the lines periodically. Yamaha uses zip-ties for the oil and fuel lines. I've never liked that system, since they can break or simply loosen and come off over time. You might want to consider replacing the zip ties with small hose clamps.
2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100