Near coastal upgrade

I currently hold a master of towing vessel inland license. I currently work on a tractor tug doing ship assist work and truly enjoy my job. However, I am looking to upgrade to a 200 ton mate near coastal. All the boats that I run here are less than 200 tons but the problem is the 60 days need to go from mate to master as we don’t go offshore that often but some boats are required to from time to time. I guess the real question is if any of you guys know someone who would be willing to take a 200 ton mate of towing vessel for 60 days of near coastal time and do a TOAR. And if not, how is the market for a 200t mate of towing? I have 20 yrs experience, mostly on harbor tugs, with some barge experience. Any information would be greatly appreciated. Thanks in advance