Seasonal hiring: what is paying well this year? after 10 years as a copywriter

A staffing agency says some roles convert to permanent after 10 weeks. Any experience at all would help. I would like to avoid a gap in my résumé. Is it worth applying to several at once?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

Apply to several. Start dates and schedules change quickly and having options helps.