Personally, I wouldn't use the sealant stuff, mainly because it is messy and only works on small punctures.
Reality; when any of my tailwheels went the tube burst from a hole in the tire. It really wasn't salvageable. However, a mountain biking tip that would work. Carry a spare tube if the extra wheel is out of your budget. Also carry a Tyvek FedEx envelope. Cut the Tyvek to cover the rip, tear worn hole in your tailwheel that the tube aneurism popped out of. Use a generous amount so it goes a distance either side of the hole and up the sidewalls a ways. Use multiple layers. Then use a bike CO2 inflater to fill the tire to about 1/2 to 1/3 the recommended pressure. This should get you home. You may have $20 in this kit, not much more than the slime approach and a much better chance to work in more situations.
