MktMktowsApiService - reuse or create a new one

Hi. i am using Soap API, and i am using MktMktowsApiService.
On every update call i run on Marketo i create a new object:service = new MktMktowsApiService(new URL(this.endPoint+"?WSDL"), new QName("http://www.marketo.com/mktows/", "MktMktowsApiService"));
Should i reuse this instead? should i create some kind of pooling?

Thanks