Hello wispers , Sorry do'nt know of any boats which travel between Icmeler and Bodrum/Gumbet. Travelling by road will take just over 3 hours for 110 mile trip by car, buses via Maramris and Mugla would be longer......
One of the excursions that ICR had on the books last year is a boat trip to Bodrum. Couple that with a ten min dolmus ride to Gumbet and there you are.