Does anyone have their own view?
Yes.
The secret is not to try and pronounce it, but to discover the sound. Its done in multiple steps
1 - start by getting a bottle of cheap whisky. Its important that the whisky is cheap, other wise it wont be a representation of Heiwa.
2 - Seat yourself in a couch in front of your TV, take off your shoes and turn off all the lights in the house. It needs to be pretty dark for this to work. Make sure there is no water near your position. The only source of water must be in another room
3 - place many hard heavy objects in the room. If a coffee table is solid enough, it will work.
4 - Get a voice recorder, you dont need to start recording right away, but you will need it for a bit later. Make sure its easy to start recording and right at your seating position.
5 - Now we get onto business. Turn on a movie that was made in the 1960's, you need to get into the right mind space. You need to be trapped in the 1960's and believe nothing has ever happened since. While watching, gulp down the cheap whisky. Bonus points if your smoking a dollar store cigar too, really get the scent of Heiwa going. Drink and smoke until you pass out in front of the TV in the dark room. Well done, your mostly there.
6 - Here comes the magic. Your going to wake up, sweaty, smelly, confused, drunk, no idea where you are and thirsty. You are now fully immersed in what is called a "Heiwa state of mind". Before you do anything, turn on the voice recorder.
7 - Your dying of the thirst, get up to go to the kitchen. Then as hard as you can, let your pinkie toe find the corner or a heavy coffee table. The harder you kick it, the more clear your pronunciation of the word "Heiwa" will be.
Congratulations, you now know how to pronounce his name. If you did it correctly, you also have it recorded to remind yourself next time.
Interesting bit of info, this is exactly how his father named him, lucky his mom was around at the time to remember to write it down.