I remember there was a discussion about the Easy Loader for the minisail on to the car roof rack. There appears to be one on ebay but difficult to see if it is all there

https://www.ebay.co.uk/itm/EASI-LOADER-FOR-SAILING-DINGHY-by-HONKLEY-ENGINEERING/4015 28033186?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D49138%26meid%3De7d8 060ce616425f8b500095de821fa9%26pid%3D100005%26rk%3D1%26rkt%3D12%26sd%3D163018067286%2 6itm%3D401528033186&_trksid=p2047675.c100005.m1851

However, Roofbox make new ones for canoes and small boat and looks as if it could be adapted for a minisail. A bit pricey at £430 but less than a new trailer.

https://www.roofbox.co.uk/scripts/rbvehsel4_tab.php?40020&gclid=Cj0KCQjw8YXXBRDXARIsA MzsQuVxKxB9-P5PNUVikP_E0ty-o3Ww7xQuJaej_VlGeeyS3ZopY5dLRqMaAsFwEALw_wcB

Something like this would help but may not be strong enough
https://www.coastwatersports.co.uk/ruk-sports-canoe-kayak-roof-rack-load-assist-p-727 3.html

Hope these links work but if not then you should be able to track them down

Just found this one that ,might be adaptable

https://www.escape-watersports.co.uk/equipment/roof-racks/malone-telos-j-bar-loading- module-detail?gclid=Cj0KCQjw8YXXBRDXARIsAMzsQuX-jC7QwhCN3KPBgatNI-S4B4VsRYrKWLw9miNgL 6v3RZbCpGH2AowaAizVEALw_wcB

Just found this one that,might be adaptable

https://www.escape-watersports.co.uk/equipment/roof-racks/malone-telos-j-bar-loading- module-detail?gclid=Cj0KCQjw8YXXBRDXARIsAMzsQuX-jC7QwhCN3KPBgatNI-S4B4VsRYrKWLw9miNgL 6v3RZbCpGH2AowaAizVEALw_wcB