Offer custom lead mining would help me boost revenue because deal volume has fallen quite a bit.Johns scraper option looks really interesting though I’ve never heard of the site so can’t vouch for it.

This site is an absolute gold mine for those just getting started like yourself.

They have nice looking direct booking sites, but I'm more curious about their digital marketing training and crm software included with their package. 

Most of the regular posters here on Bigger Pockets have a negative view of Sub2, especially after a couple of individuals spammed the site to promote their training.There was already a negative view of Sub2 on Bigger Pockets due to most of the regular posters did their deals in a different manner therefore, as is human nature anything out of our own personal preference can look mighty sinister. 

There are 20+ CPAs and accountants on this site that specialize in real estate taxation.

The program is neither good nor bad, there's just different pros & cons compared to cash paying tenants.Have offered to schedule a call with you numerous times to try and assist you, but you seem to prefer posting & posting & posting - which will take so much longer:(What are the chances you'll actually invest someday, given how long it's taking you to do basic research?

One thing you might think of doing is having and promoting your own website to avoid the exhorbitant fees charged by the third party sites such as Expedia, Booking.com and Air BnB.  

I created an electronic google doc time tracker: Time LogContemporaneous time log of rental real estate activitiesActivity DescriptionTenant recruitmentTenant screeningNegotiating and executing leasesOverseeing repairs and maintenanceCommunications with tenants and vendorsTravel timeResearch for potential rental real estate (pub 925)Acquiring rental real estate (pub 925)Paperwork/bookkeeping/bankingResearch and purchase of materialsRent collectionEvictionOn-site cleaningBill paymentOther:Time SpentDateMM/DD/YYYYSubmit

Another example of finding opportunity by being on site. 

The mobile home can "Never" be from another site or piece of land only from the manufacturer.