I am not a coach, but I am a parent whose son just graduated from a program that has no booster club. The issue is tough, because if you do form one, the objectives sometimes get skewed - "because I put in all this time, my kid better start, etc" but if you form it with a strong motto of doing this for the good of the TEAM and the TEAMS to come, and make this a reminder through the way you present and work with the booster club, then it can work. I know that our young coach was very leary of forming a booster club, but it also caused much frustration for him because he tried to run everything himself.
THis past year he required more help from his coaches, assigning them different roles in our fundraiser dinner (one for silent/live auction, one for decorations, one for catering, one for ticket sales,etc) and that worked better. We did have participation form a core group of sr parents who were I think pretty good about separating the playing time types of issues form the parent involvement. THe jr parents were helpful too, but after that the participation falls off. I would strongly suggest that the biggest push for parent involvement be at the fresheman level (train em up right! ) because by the time parents get to be a parent of s sr, the last thing they want to do is sell hot dogs while Buddy hits his HR. By this time, they should have put in their time so that they can enjoy that last season doing what parents do best - watching thier kid, who might be playing thier last season of any hs sport. Explain to those younger parents that they are investing in the program, and if they want a first class team by the time thier kids get to be srs, they better put in the time now.For instance at the snack bar - Yes, it is a pain to go to the JV game one night and work at the varsity the next, but it's the one activity you can do with your family that doesn;t require a sitter, it gets everyone out to watch the game, and the younger players get exposed to the "BIG" game. Can you tell that we had NO participation form the yougner parents?!
I think that if I were a coach, I would assess what I needed in the way of equipment, travel expenses for the team and other team related stuff along with deadline for when it is needed, then either give it to my booster club and let them duke it out, or if I didn't have a booster club, make it clear at the start-up meeting that every parent is responsible for claiming a job and they need to sign up and be responsible. Either way, the coach must point out that putting in time, effort and/or money DOES NOT buy a student a lace on the team or on the field - that is their job to earn it.
In the same breath, a coach needs to explain in a positive manner when it is a good time for parents to discuss their individual son - what can be done to get better (there is a whole interesting thread elsewhere on this matter).
Getting back to the sign up - have a place there to indicate what special talents the family brings to the team - marketing skills, broadcasting, construction, seamstress, travel agent, catering, personnel management, printing, photography/video, scorekeeping, baking. Ask what business they are in - you never know what you might come up with for a fundraiser. Most parents respect the coach and if they can contribute their special skill, gives them "ownership" to the team, and they might leave you alone on the playing time issue!
Finally, if you want parent volunteers, COMMUNICATE! Find out what is the best way to communicate with the families. Most teams have a phone list of cell numbers for the kids, but the kids aren't a very reliable source of information... so build a phone tree, get every parent's email (all of them), get a marquis for the field or a board where you can post notices.DON'T SEND HOME NOTES - I am still finding half-sheets of paper in my son's vehicle - and it's been two months since season is over. Our school has a leave a message system where the coach can record a voice message, program a list of phone numbers in it, and it sends the message to all the numbers programmed into it. THE EASIEST way to tick off a parent and generate ill feeling in the stands? DON'T TALK TO THEM.
Just one other way to get families involved - we had Thursday night dinners this year before every Friday night game. Each of our sr parents either hosted by themselves or teamed up with another family to feed teh boys a healthy, carbo dinner (spaghetti, tacos, lasagne)- it was a great team building thing fo rth eboys and the parents. Nothing fancy required, had them in the back yard of one gracious parent, some at a few other homes, and it got people talking to one another. There was no coach involvement - coaches didn't come to any of them - no motivational speeches, just boys having a good time (bonding, I guess)
That's all I can think of - good luck.