help selecting best prop...

[Roadblock23434]

ok here is a pic of a build i wanna have a go at and i will be using roybi 4cycle weed trimmer engine.... any ideas on what size prop to run and where i can get one?

http://static.rcgroups.com/forums/attachments/6/7/5/4/6/829042.attach?ESAQEwNjZGZhFyOUBmtlBGN5ZwgcoJSaMFHl EzcjMJp=

[Ron Olson]

You're not going to get any responses because it looks like you put in a link to a competing forum site. You'd be better off putting the pix in here instead of linking them.
Most people start off with an Octura X-470 or X-472 as a starting place for gas engined boats.