I'm coming at this as a Methodist, and first of all, I'd like to say it's not always that easy to get the Methodist Men to help out with scouting. Some of those guys are more bullheaded than you would expect.
One of the suggestions that I saw above was that what was really needed was a family inside the congregation that will champion Scouting. They need to be able to step into a leadership role, and find other families both inside and outside the congregation that may be interested in it.
You may also need to decide if you are going to be focusing on serving your own congregation, or serving the community. My own troop has a number of different religious traditions represented. I'd say about 15-20% of the pack are members of the church, and maybe 10% of the Troop.
As for the Religious Emblems Programs, we offered them to all of our church youth + any of the scouts who would like to participate. We focused on them as primarily Christian Education in our case, as the PRAY program is very non-denominational, and works with just about all mainline Christian Denominations. It's a good program, regardless of whether or not a kid is involved in scouting.
I do not know if the Jewish Religious emblems could be used in that way. But if they can be, I would recommend asking the church to offer them for all the kids, not just the scouts... and make it available to scouts of your faith in other troops and packs throughout the community. It might be you signing up to help run things though.
However, if you cannot find a critical mass within your own synagogue, I hope you can find a good home in some other location, in a multi-faith pack or troop.