Most of the big boats 30' +/- charter out of Toronto area and I don't think the salmon would be good at the west end of the lake in June.
You probably don't want to get NY license but Oswego is great in June and there is a guy there with a 36' boat there.
http://www.coldsteelsportfishing.com/charter.htm
I've seen a larger boat that looks like it comes out of brighton an older boat but certainly big and would suit your needs fine. Does anyone know who that is?
Try getting in touch with Chris at
http://www.thereelthingfishing.com/ he knows a lot of Charter guys and would be able to help.
Ian Scrimshaw of Open season charters -out of Wellington
http://www.openseasonlodge.com/ has a 24' +/- and might be able to take 6 I think but I don't think 8.
Kevin of Strike II charters
http://www.anglersrest.ca/ is also in Wellington and has a 24' as well.
I can take 4 but thats it. Although I can easily accomodate you all right on West Lake and Kevin and Ian would pick you guys up from our docks. Check out our website at
www.westlakewillows.com or email me at
scott@westlakewillows.com with more details and I can see what I can work out for you. It would cost more but three boats together will get you onto fish faster and everyonoe gets more action. Late June was awesome last year for salmon out of wellington.
No mattter who you go with 12 - 16 buddies together especially before one signs his rights and freedoms away will be a great time!!!!!
Scott