Being curious about this, I looked at the BoatUS towing to see how they handle home dock towing, it seems they also offer towing from a home dock if needed for repairs:
From their website:
"BoatUS Towing Service is meant for tows resulting from breakdowns at sea or at restricted use docks. In the event of a breakdown at your home dock or mooring, the Unlimited Service Level will provide for 50% of the cost to tow your boat to a repair facility. The Unlimited Gold Service Level provides for 100% of the cost to tow your disabled boat up to 25 miles from its home dock or mooring to a repair facility. BoatUS Towing Services do not provide for pre-existing conditions or tows from a home dock or mooring in the first 30 days of Membership"
If it isn't obvious the 'Gold' service costs more $$$
It's nice that both of these fine companies offer this type of service.