David
(David Bonestroo)



| David Bonestroo VERIFIED | |
| Purple belt 2 stripe(s) VERIFIED | |
| 7 year(s) and 0 month(s) of training | |
| 66hr 20m of training logged | |
| Nagele, Flevoland, Netherlands | |
| UNDERHOOK SOCIETY VERIFIED | |
| Maximus Effort | |
| Website | |
| Facebook profile | |
| YouTube channel | |
| @Maximus_Effort_BJJ | |
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Achievements
| Profile manually reviewed & certificate issued | |
| Current rank verified by promoting instructor | |
| Name verified by credit card | |
| 10 verifications received | |
| 25 verifications received | |
| 50 verifications received | |
| Trained for 5 years | |
| Trained for 10 years | |
| Trained for 15 years | |
| Trained for 20 years | |
| Won 5 gold medals | |
| Won 10 gold medals | |
| Won 25 gold medals | |
| 10 competition matches | |
| 50 competition matches | |
| 100 competition matches | |
| 500 forum posts | |
| 1,000 forum posts |
Coaches
![]() | Iwan Hansen UNDERHOOK SOCIETY Leiden, Netherlands Black belt 1st degree |
![]() | Mike Harteveld UNDERHOOK SOCIETY Netherlands Brown belt |
Purple belt verification progress
Profile filled out Promotion history filled out Identity Confirmed 815/400 vote points
100%
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Passion and hard work!

Dreams can come true!

Feels great to be welcome.
Promotion history
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December 1, 2024 - Leiden
1 year(s) 3 month(s) 20 day(s)
What an honour to earn this belt and receive it from you who gave us this opportunity. No words can properly express my respect.
Stripe 2: December 21, 2025






June 4, 2022 - Emmeloord
2 year(s) 5 month(s) 27 day(s)
Promoted by: M. Peters
Stripe 4: October 26, 2023






March 4, 2019 - Emmeloord
3 year(s) 3 month(s) 0 day(s)
Stripe 4: December 6, 2021
Votes received for current rank
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