If you can afford to….like others have mentioned…. get a bigger hub like a six-pack or one of those double units, a heater, and some of those cheap floor mats or i/o carpet. Set that thing up ahead of time in house if possible and they will for sure get excited to get out and play in it. I have had my kid and his friends out on the ice for years now and the biggest key to keeping them out there is keeping them warm and as dry as possible. Well, that and as many distractions and treats as you can. Outdoor sports like golf, whiffle ball, kick ball, skating, boot hockey, make shift frisbee golf, even horse shoes(no, not the metal ones) ….along with tip ups are a great way to “fish”. Keep the games short, warm up, and repeat often will easily get you hours. One of those portable firepits along with smore material or some hot dogs can provide some fun. After they are done with being outside, a couple bags of mom banned treats, a cot, and some sort of mobile screen with a movie is simply money, and will allow some time for you to fish as well. Good luck, it can be frustrating, especially if you have to bail on a good bite. But don’t push them……sometimes it just time, and ya got to go…..