Unite members have been on all-out strike since 11 March.
He said when people get the items back "it's really emotional"."For the 300th person I helped, I found a ring for this 12-year-old girl," Mr Wiles said.
He added: "It was not valuable but it was one she bought with her mum on one of her shopping trips, so for her it was really sentimental."So it's never around the value of the item, it's always around what it means to the person."Mr Wiles received one of the council's Chairman Awards for 2025.
The Mayors of Bournemouth, Christchurch and Poole all nominated a person or group, and they were presented with certificates in recognition of work carried out in each local community.Speaking at the presentation event at the civic centre, Mayor of Bournemouth George Farquhar described Mr Wiles as an "exemplar of selfless and skill in the assistance of others".
He added he "brings great joy and relief to so many, particularly as many losses are in the sand on our glorious beaches, and without his intervention would never be recovered".
After Mr Wiles' 200th find, local artist Matthew Byrom created a mural of him in Bournemouth.As a result, volunteer Karen Pearce said the actions of the vandals had left them "very worried".
She added: "Yesterday was a nightmare for us at the rescue. We have had a few encounters with a group of lads."We had to speak to them last week as they had taken off our electric fencing and had been coming into the field where our long stay horses are kept.
"We spoke to them and they were polite and said they wouldn't come on to the land again as we told them it frightened the horses."They have been back and this time have built a den in our field, dug fire pit holes, started fires, broke all our fencing, literally smashed it up and cut it down."