First, very sorry for his condition. As to your question, you asked about an RV to pull a bay boat. Size and how comfortable you are with towing, launching, loading, will be the real decision makers. You may want to find a boat storage or marina facility where you can keep the boat and then call when you want to use it and they will have it in the water waiting for you, and will put it back in the storage rack when you return. If you do want to tow, check the weight of the boat and select a vehicle according to comfort and your budget. Most motorhomes are capable of towing 20-25 foot boats.