In France I think the requirements for glider towing were 150 TT , glider + piston, and at least 50PIC on each, but then again if you're a member they will probaly work something out. One guy at my club had just gotten his glider license and was nowhere close to 150TT and still flew us.
Maybe worth looking into, especially if you'd go two years without flying.
Regardless, I would recommend gliders to any pilot, lots to be learnt, and a great way of networking, lots of former and current airline pilots.